python type_error ai_generated true

TypeError: 不支持的操作数类型: 'str' 和 'float'

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

ID: python/pytest-approx-comparison-error

其他格式: JSON · Markdown 中文 · English
80%修复率
85%置信度
0证据数
2025-05-10首次发现

版本兼容性

版本状态引入弃用备注
3.8 active — — —
3.9 active — — —
3.10 active — — —
3.11 active — — —
3.12 active — — —

根因分析

使用 pytest.approx() 与非数字类型，例如比较字符串和浮点数，导致类型错误。

English

Using pytest.approx() with non-numeric types, such as comparing a string to a float, causing a type error.

generic

解决方案

  1. 95% 成功率 
    Ensure both operands are numeric: `assert pytest.approx(3.14) == float('3.14')`
  2. 90% 成功率 
    Convert the string to float explicitly: `assert pytest.approx(float('3.14'), 0.01) == 3.14`

无效尝试

常见但无效的做法:

  1. 85% 失败

    pytest.approx() requires numeric types; string comparison does not support approximate matching.

  2. 70% 失败

    This duplicates functionality of approx() and may still fail if types are mismatched.