PEP8 info:
models.py:10:80: E501 line too long (83 > 79 characters)
Models.py:
field = TreeForeignKey(\'self\', null
If you have some ridiculous long string that isn't very convenient to break into pieces (thinking about things like Sentry DSNs, the occasional module in MIDDLEWARE or INSTALLED_APPS), you can just put # noqa
at the end of the line and the linters will ignore the line. Use sparingly thou and definitely not for the case you asked for.