python type_error ai_generated true

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

ID: python/typeerror-unsupported-operand-type

Also available as: JSON · Markdown · 中文
80%Fix Rate
87%Confidence
0Evidence
2025-07-20First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.8 active — — —
3.9 active — — —
3.10 active — — —

Root Cause

A test function tries to add an integer and a string, which is not allowed without explicit conversion.

generic

中文

测试函数尝试将整数和字符串相加，未经显式转换不允许。

Workarounds

  1. 95% success Convert string to int before addition 
    result = 5 + int('3')
  2. 90% success Ensure type consistency in test data 
    a = 5; b = 3; result = a + b

Dead Ends

Common approaches that don't work:

  1. Using str() on both operands 50% fail

    Converts both to strings, resulting in concatenation instead of addition.

  2. Using int() on string without validation 60% fail

    If string is not numeric, int() raises ValueError.