PEP8 info:
models.py:10:80: E501 line too long (83 > 79 characters)
Models.py:
field = TreeForeignKey(\'self\', null
autopep8 can solve spacing issues in files and entire project as well, here is a link to the documentation: https://github.com/hhatto/autopep8
autopep8
pip install --upgrade autopep8
autopep8 --in-place --aggressive --aggressive
autopep8 --in-place --aggressive --aggressive C://a/test.py