PEP8 info:
models.py:10:80: E501 line too long (83 > 79 characters)
Models.py:
field = TreeForeignKey('self', null=True, blank=True, related_name='abcdefgh')
How to correctly write this line?
It's "correct", PEP8 just flags lines over 79 characters long. But if you're concerned about that, you could write it like this:
field = TreeForeignKey('self',
null=True,
blank=True,
related_name='abcdefgh')
Or this:
field = TreeForeignKey(
'self',
null=True,
blank=True,
related_name='abcdefgh',
)
Or, really, any other style that would break the single line into multiple shorter lines.
I just found this neat program called autopep8! https://github.com/hhatto/autopep8
pip install autopep8
autopep8 -i models.py
You can also do (recursively):
autopep8 -ri package/
Auto PEP8 only makes safe changes to the files, only changing layout, not code logic.
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.
This is very subjective. I'd write, if I were following E501 strictly:
field = TreeForeignKey('self',
null=True,
blank=True,
related_name='abcdefgh')
I usually consider 100 too long, not 80.
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