unnecessary-generator-list (C400)#
Derived from the flake8-comprehensions linter.
Fix is always available.
What it does#
Checks for unnecessary generators that can be rewritten as list
comprehensions (or with list directly).
Why is this bad?#
It is unnecessary to use list around a generator expression, since
there are equivalent comprehensions for these types. Using a
comprehension is clearer and more idiomatic.
Further, if the comprehension can be removed entirely, as in the case of
list(x for x in foo), it's better to use list(foo) directly, since it's
even more direct.
Examples#
Use instead:
Fix safety#
This rule's fix is marked as unsafe, as it may occasionally drop comments when rewriting the call. In most cases, though, comments will be preserved.