claude-howto/05-skills/code-review/scripts/analyze-metrics.py

#!/usr/bin/env python3
import re
import sys

def analyze_code_metrics(code):
    """Analyze code for common metrics."""

    # Count functions
    functions = len(re.findall(r'^def\s+\w+', code, re.MULTILINE))

    # Count classes
    classes = len(re.findall(r'^class\s+\w+', code, re.MULTILINE))

    # Average line length
    lines = code.split('\n')
    avg_length = sum(len(l) for l in lines) / len(lines) if lines else 0

    # Estimate complexity
    complexity = len(re.findall(r'\b(if|elif|else|for|while|and|or)\b', code))

    return {
        'functions': functions,
        'classes': classes,
        'avg_line_length': avg_length,
        'complexity_score': complexity
    }

if __name__ == '__main__':
    with open(sys.argv[1], 'r') as f:
        code = f.read()
    metrics = analyze_code_metrics(code)
    for key, value in metrics.items():
        print(f"{key}: {value:.2f}")