python type_error ai_generated true

TypeError: unsupported operand type(s) for -: 'str' and 'str'

ID: python/pytest-approx-comparison-type-error

Also available as: JSON · Markdown · 中文
80%Fix Rate
83%Confidence
0Evidence
2024-12-12First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.x active — — —

Root Cause

Using pytest.approx on non-numeric types like strings.

generic

中文

对非数值类型（如字符串）使用 pytest.approx。

Workarounds

  1. 95% success 
    assert float('3.14') == pytest.approx(3.14)
  2. 99% success 
    assert 'hello' == 'hello'

Dead Ends

Common approaches that don't work:

  1. 70% fail

    If the strings are not numeric, conversion raises ValueError.

  2. 100% fail

    approx only works with numeric types.