python type_error official true

ValueError

ID: python/valueerror

Also available as: JSON · Markdown
80%Fix Rate
95%Confidence
0Evidence

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.x active — — —

Root Cause

An operation received an argument with the right type but an inappropriate value. E.g., int('abc'), math.sqrt(-1), or a parameter outside allowed range.

generic

Official Documentation

https://docs.python.org/3/library/exceptions.html

Workarounds

  1. 90% success Validate input values before passing them to functions 
    Check ranges, formats, and constraints; use pydantic or dataclasses for validation
  2. 90% success Read the error message to find which argument has an invalid value, then fix the source 
    Track the value back to its origin and apply the correct transformation

Dead Ends

Common approaches that don't work:

  1. Wrapping every function call in try/except ValueError 80% fail

    Hides bugs in data; invalid values propagate silently