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juanplopes/cpf.py

Created August 14, 2015 23:24
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cpf.py
def next_digit(value, base):
return value + str(sum(int(a)*b for a,b in zip(value, base))%11%10)
def make_valid(value, ap2, base):
return next_digit(next_digit(value, base), ap2+base)
def is_valid_cpf(cpf):
return make_valid(cpf[:9], [0], [1,2,3,4,5,6,7,8,9]) == cpf
def is_valid_cnpj(cnpj):
return make_valid(cnpj[:12], [5], [6,7,8,9,2,3,4,5,6,7,8,9]) == cnpj
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