Measures how often models extract single-use trivial functions instead of keeping code inline. A function is flagged if it has ≤3 lines of body (excluding docstrings) and is called exactly once.

• Ratio — fraction of all function definitions that are unnecessary extractions
• Total Functions — average number of function definitions per file

50 Python prompts, each requesting a multi-stage utility script with enough distinct steps to tempt extraction into tiny single-use helpers.