Consistency Checks vs. SpeedΒΆ

Anytree can run some costly internal consistency checks. With version 2.9.1 these got disabled by default. In case of any concerns about the internal data consistency or just for safety, either

  • set the environment variable ANYTREE_ASSERTIONS=1, or

  • add the following lines to your code:

>>> import anytree
>>> anytree.config.ASSERTIONS = True