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assert-raises-exception (B017)#

Derived from the flake8-bugbear linter.

What it does#

Checks for assertRaises and pytest.raises context managers that catch Exception or BaseException.

Why is this bad?#

These forms catch every Exception, which can lead to tests passing even if, e.g., the code under consideration raises a SyntaxError or IndentationError.

Either assert for a more specific exception (builtin or custom), or use assertRaisesRegex or pytest.raises(..., match=<REGEX>) respectively.


self.assertRaises(Exception, foo)

Use instead:

self.assertRaises(SomeSpecificException, foo)