flake8 plugin to validate expressions complexity
An extension for flake8 that validates expression complexity.
Splits code into expression and scores each according to how much one is complicated. Fires an error on each expression more complex than theshold.
Default complexity is 7, can be configured via --max-expression-complexity
option.
Since Django ORM queries can produce long and readable expressions,
checker can skip them. To enable this behaviour,
use --ignore-django-orm-queries-complexity
option.
pip install flake8-expression-complexity
if (
(user and user.is_authorized)
and user.subscriptions.filter(start_date__lt=today, end_date__gt=today).exists()
and (
user.total_credits_added
- Check.objects.filter(user=user).aggregate(Sum('price'))['check__sum']
)
and UserAction.objects.filter(user=user).last().datetime > today - datetime.timedelta(days=10)
):
...
Usage:
$ flake8 --max-expression-complexity=3 test.py
text.py:2:5: ECE001 Expression is too complex (7.0 > 3)
Error code | Description |
---|---|
ECE001 | Expression is too complex (X > Y) |
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