uproot.daskframe RecursionError

Traceback (most recent call last):
  File "daskframe_from_rootfile.py", line 23, in <module>
    Ddd = uproot.daskframe(Dplus_ntuples[0:100], flatten=True, treepath="ntuple", basketcache="100Mb")
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/uproot/tree.py", line 2040, in daskframe
    array = dask.array.from_array(x, x.shape, fancy=True)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/dask/array/core.py", line 2720, in from_array
    asarray = not hasattr(x, "__array_function__")
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/chunked.py", line 762, in _util_columns
    return self._util_columns_descend(self._chunks[chunkid], seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 660, in _util_columns_descend
    return array._util_columns(seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 660, in _util_columns_descend
    return array._util_columns(seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/chunked.py", line 762, in _util_columns
    return self._util_columns_descend(self._chunks[chunkid], seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 660, in _util_columns_descend
    return array._util_columns(seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 250, in __getattr__
    if where in self.columns:
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/base.py", line 664, in columns
    return self._util_columns(set())
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 476, in _util_columns
    return self._util_columns_descend(self.array, seen)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 295, in array
    return self.materialize()
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/awkward/array/virtual.py", line 326, in materialize
    array = self._util_toarray(self._generator(*self._args, **self._kwargs), self.DEFAULTTYPE)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/uproot/tree.py", line 1964, in __call__
    return self.branch.array(interpretation=self.interpretation, entrystart=entrystart, entrystop=entrystop, flatten=self.flatten, awkwardlib=self.awkwardlib, cache=None, basketcache=self.basketcache, keycache=self.keycache, executor=self.executor, blocking=True)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/uproot/tree.py", line 1361, in array
    awkward = _normalize_awkwardlib(awkwardlib)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/site-packages/uproot/tree.py", line 91, in _normalize_awkwardlib
    return importlib.import_module(awkwardlib)
  File "/gpfs/share/home/meliache/envs/analysistools/lib/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File "<frozen importlib._bootstrap>", line 968, in _find_and_load
  File "<frozen importlib._bootstrap>", line 148, in __enter__
  File "<frozen importlib._bootstrap>", line 174, in _get_module_lock
RecursionError: maximum recursion depth exceeded