python runtime_error ai_generated true

Fixture 'data' called directly. Fixtures are not meant to be called directly, but are provided automatically by pytest.

ID: python/pytest-fixture-return-none

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80%Fix Rate
86%Confidence
0Evidence
2025-04-10First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.10 active — — —

Root Cause

A test or fixture tries to call a fixture function directly (e.g., data()) instead of using it as a parameter, causing pytest to raise an error because fixtures are not regular functions.

generic

中文

测试或夹具尝试直接调用夹具函数（如 data()），而不是将其作为参数使用，导致 pytest 引发错误，因为夹具不是常规函数。

Workarounds

  1. 95% success 
    Use the fixture as a parameter in the test function: def test_foo(data): instead of calling data().
  2. 80% success 
    If you need to call a fixture programmatically, use the request fixture: request.getfixturevalue('data')

Dead Ends

Common approaches that don't work:

  1. 70% fail

    Adding a return value to the fixture does not fix the issue because the fixture is still being called incorrectly.

  2. 50% fail

    Converting the fixture to a regular function may work but loses the benefits of fixture scoping and dependency injection.