assert_python_failure

test.support.script_helper

function

assert_python_failure(*args, **env_vars)

Assert that running the interpreter with args and optional environment variables env_vars fails (rc != 0) and return a (return code, stdout, stderr) tuple.

© Python Software Foundation. PSF License Version 2 · Official docs ↗

Changed in 3.9

3.9: The function no longer strips whitespaces from stderr.