python subprocess_error ai_generated partial

subprocess.CalledProcessError: Command '...' returned non-zero exit status 1

ID: python/subprocess-calledprocesserror

Also available as: JSON · Markdown
82%Fix Rate
85%Confidence
50Evidence
2023-01-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
311 active — — —

Root Cause

Subprocess command failed. The actual error is in the subprocess output, not in Python.

generic

Workarounds

  1. 95% success Read stderr output to see the actual error: e.stderr.decode() 
    try:
    subprocess.run(cmd, check=True, capture_output=True)
except subprocess.CalledProcessError as e:
    print(e.stderr.decode())

    Sources: https://docs.python.org/3/library/subprocess.html#subprocess.CalledProcessError

  2. 90% success Test the command manually in terminal first to debug 
    # Run the exact command from Python's error message in your terminal:
# e.g., if Python ran ['git', 'push'], run: git push
# This shows the real error output directly

    Sources: https://docs.python.org/3/library/subprocess.html#subprocess.run

Dead Ends

Common approaches that don't work:

  1. Use shell=True to avoid the error 80% fail

    shell=True doesn't fix the command failure and adds security risks

  2. Remove check=True to ignore errors 65% fail

    Silently ignores failures — downstream code may get wrong results

Error Chain

Frequently confused with: