deprecated, checkout https://github.com/Trim21/pre-commit-hooks
find trailing comma like this in python
a = 1, # not ok b = 1, # not ok d = (1, ) # ok c = {1, 2, 3, 4}, # not ok h = ['element'][0, ] # not ok because it's a tuple in `[]` g = 1, 2, 3, # ok, not a single elementI don't mean to make it a tuple, I just add a , by accident.