Luhn
2018-08-14 本文已影响0人
阴天有时下肉丸
#return luhn checksum:
def luhn_residue(digits):
return sum(sum(divmod(int(d)*(1 + i%2), 10))
for i, d in enumerate(digits[::-1])) % 10
#generate valid number sequences
def getImei(N):
part = ''.join(str(random.randrange(0,9)) for i in range(N-1))
res = luhn_residue('{}{}'.format(part, 0))
return '{}{}'.format(part, -res%10)
