python config_error ai_generated true

PytestUnknownMarkWarning: Unknown pytest.mark.slow - is this a typo? You can register custom marks to avoid this warning

ID: python/pytest-mark-unknown-warning

Also available as: JSON · Markdown · 中文
80%Fix Rate
90%Confidence
0Evidence
2024-02-27First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
7.x active — — —
8.x active — — —

Root Cause

A custom marker (e.g., @pytest.mark.slow) is used but not registered, so pytest emits a warning and -m 'slow' filtering may not behave as expected.

generic

中文

使用了自定义标记（例如 @pytest.mark.slow）但未注册，因此 pytest 发出警告，并且 -m 'slow' 过滤可能无法按预期工作。

Workarounds

  1. 98% success 
    # pytest.ini
[pytest]
markers =
    slow: marks tests as slow
    integration: requires external services
  2. 95% success 
    # pyproject.toml
[tool.pytest.ini_options]
markers = [
  "slow: marks tests as slow",
  "integration: requires external services",
]

Dead Ends

Common approaches that don't work:

  1. 80% fail

    Silences the warning but -m filtering still doesn't recognize the mark.

  2. 70% fail

    -k matches names, not markers; results differ.

  3. 30% fail

    Works but duplicates config; pytest.ini is simpler and canonical.