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assert-false (B011)#

Derived from the flake8-bugbear linter.

Fix is always available.

What it does#

Checks for uses of assert False.

Why is this bad?#

Python removes assert statements when running in optimized mode (python -O), making assert False an unreliable means of raising an AssertionError.

Instead, raise an AssertionError directly.


assert False

Use instead:

raise AssertionError

Fix safety#

This rule's fix is marked as unsafe, as changing an assert to a raise will change the behavior of your program when running in optimized mode (python -O).