You can now use this plugin for finding complexity issues in your code base. Activate it through ``pylint --load-plugins=pylint.extensions.mccabe``. It introduces a new warning, ``too-complex``, which is emitted when a code block has a complexity higher than a preestablished value, which can be controlled through the ``max-complexity`` option, such as in this example:: $ cat a.py def f10(): """McCabe rating: 11""" myint = 2 if myint == 5: return myint elif myint == 6: return myint elif myint == 7: return myint elif myint == 8: return myint elif myint == 9: return myint elif myint == 10: if myint == 8: while True: return True elif myint == 8: with myint: return 8 else: if myint == 2: return myint return myint return myint $ pylint a.py --load-plugins=pylint.extensions.mccabe R:1: 'f10' is too complex. The McCabe rating is 11 (too-complex) $ pylint a.py --load-plugins=pylint.extensions.mccabe --max-complexity=50 $