ValueError                                Traceback (most recent call last)

<ipython-input-11-d082716242c0> in <module>
     14
     15 df = pd.DataFrame(revlog)
---> 16 df.columns = ['id', 'cid', 'usn', 'r', 'ivl',
     17               'last_lvl', 'factor', 'time', 'type']
     18 df = df[(df['cid'] <= time.time() * 1000) &

4 frames

/usr/local/lib/python3.8/dist-packages/pandas/core/generic.py in __setattr__(self, name, value)
   5498         try:
   5499             object.__getattribute__(self, name)
-> 5500             return object.__setattr__(self, name, value)
   5501         except AttributeError:
   5502             pass

/usr/local/lib/python3.8/dist-packages/pandas/_libs/properties.pyx in pandas._libs.properties.AxisProperty.__set__()

/usr/local/lib/python3.8/dist-packages/pandas/core/generic.py in _set_axis(self, axis, labels)
    764     def _set_axis(self, axis: int, labels: Index) -> None:
    765         labels = ensure_index(labels)
--> 766         self._mgr.set_axis(axis, labels)
    767         self._clear_item_cache()
    768

/usr/local/lib/python3.8/dist-packages/pandas/core/internals/managers.py in set_axis(self, axis, new_labels)
    214     def set_axis(self, axis: int, new_labels: Index) -> None:
    215         # Caller is responsible for ensuring we have an Index object.
--> 216         self._validate_set_axis(axis, new_labels)
    217         self.axes[axis] = new_labels
    218

/usr/local/lib/python3.8/dist-packages/pandas/core/internals/base.py in _validate_set_axis(self, axis, new_labels)
     55
     56         elif new_len != old_len:
---> 57             raise ValueError(
     58                 f"Length mismatch: Expected axis has {old_len} elements, new "
     59                 f"values have {new_len} elements"

ValueError: Length mismatch: Expected axis has 0 elements, new values have 9 elements