from PyQt4.Qt import PYQT_VERSION_STR
print("PyQt version:", PYQT_VERSION_STR)

('PyQt version:', '4.12.1')

AttributeError: 'module' object has no attribute 'TreeStyle' (in subprocess)
  ...
  ...
  ...
  packages/VirtualMicrobes/plotting/Graphs.py", line 1083, in make_tree_style
  ts = ete3.TreeStyle()