Created by Zhiwei Li 2015-08-31

File check_iccid.py Added

+def luhn_checksum(card_number):

+    def digits_of(n):

+        return [int(d) for d in str(n)]

+    digits = digits_of(card_number)

+    odd_digits = digits[-1::-2]

+    even_digits = digits[-2::-2]

+    checksum = 0

+    checksum += sum(odd_digits)

+    for d in even_digits:

+        checksum += sum(digits_of(d*2))

+    return checksum % 10

+def is_luhn_valid(card_number):

+    return luhn_checksum(card_number) == 0

+def calculate_luhn(partial_card_number):

+    check_digit = luhn_checksum(int(partial_card_number) * 10)

+    return check_digit if check_digit == 0 else 10 - check_digit

+#print(calculate_luhn(iccid))

+if not is_luhn_valid(iccid):

+    exit("invalid iccid")

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