Python随机生成信用卡卡号的实现方法

本文实例讲述了Python随机生成信用卡卡号的实现方法。分享给大家供大家参考。具体分析如下：

这段Python代码根据信用卡卡号产生规则随机生成信用卡卡号，是可以通过验证的，仅供学习参考，请不要用于非法用途，否则后果自负。

    #!/usr/bin/python
    """
    gencc: A simple program to generate credit card numbers that pass the
    MOD 10 check (Luhn formula).
    Usefull for testing e-commerce sites during development.
    Copyright 2003-2012 Graham King
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    GNU General Public License for more details.
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
    """
    # Different naming convention, because translated from PHP
    # pylint: disable=C0103
    from random import Random
    import copy
    visaPrefixList = [
        ['4', '5', '3', '9'],
        ['4', '5', '5', '6'],
        ['4', '9', '1', '6'],
        ['4', '5', '3', '2'],
        ['4', '9', '2', '9'],
        ['4', '0', '2', '4', '0', '0', '7', '1'],
        ['4', '4', '8', '6'],
        ['4', '7', '1', '6'],
        ['4']]
    mastercardPrefixList = [
        ['5', '1'], ['5', '2'], ['5', '3'], ['5', '4'], ['5', '5']]
    amexPrefixList = [['3', '4'], ['3', '7']]
    discoverPrefixList = [['6', '0', '1', '1']]
    dinersPrefixList = [
        ['3', '0', '0'],
        ['3', '0', '1'],
        ['3', '0', '2'],
        ['3', '0', '3'],
        ['3', '6'],
        ['3', '8']]
    enRoutePrefixList = [['2', '0', '1', '4'], ['2', '1', '4', '9']]
    jcbPrefixList = [['3', '5']]
    voyagerPrefixList = [['8', '6', '9', '9']]
    def completed_number(prefix, length):
      """
      'prefix' is the start of the CC number as a string, any number of digits.
      'length' is the length of the CC number to generate. Typically 13 or 16
      """
      ccnumber = prefix
      # generate digits
      while len(ccnumber) < (length - 1):
        digit = str(generator.choice(range(0, 10)))
        ccnumber.append(digit)
      # Calculate sum
      sum = 0
      pos = 0
      reversedCCnumber = []
      reversedCCnumber.extend(ccnumber)
      reversedCCnumber.reverse()
      while pos < length - 1:
        odd = int(reversedCCnumber[pos]) * 2
        if odd > 9:
          odd -= 9
        sum += odd
        if pos != (length - 2):
          sum += int(reversedCCnumber[pos + 1])
        pos += 2
      # Calculate check digit
      checkdigit = ((sum / 10 + 1) * 10 - sum) % 10
      ccnumber.append(str(checkdigit))
      return ''.join(ccnumber)
    def credit_card_number(rnd, prefixList, length, howMany):
      result = []
      while len(result) < howMany:
        ccnumber = copy.copy(rnd.choice(prefixList))
        result.append(completed_number(ccnumber, length))
      return result

    def output(title, numbers):
      result = []
      result.append(title)
      result.append('-' * len(title))
      result.append('\n'.join(numbers))
      result.append('')
      return '\n'.join(result)
    #
    # Main
    #
    generator = Random()
    generator.seed()    # Seed from current time
    print("darkcoding credit card generator\n")
    mastercard = credit_card_number(generator, mastercardPrefixList, 16, 10)
    print(output("Mastercard", mastercard))
    visa16 = credit_card_number(generator, visaPrefixList, 16, 10)
    print(output("VISA 16 digit", visa16))
    visa13 = credit_card_number(generator, visaPrefixList, 13, 5)
    print(output("VISA 13 digit", visa13))
    amex = credit_card_number(generator, amexPrefixList, 15, 5)
    print(output("American Express", amex))
    # Minor cards
    discover = credit_card_number(generator, discoverPrefixList, 16, 3)
    print(output("Discover", discover))
    diners = credit_card_number(generator, dinersPrefixList, 14, 3)
    print(output("Diners Club / Carte Blanche", diners))
    enRoute = credit_card_number(generator, enRoutePrefixList, 15, 3)
    print(output("enRoute", enRoute))
    jcb = credit_card_number(generator, jcbPrefixList, 16, 3)
    print(output("JCB", jcb))
    voyager = credit_card_number(generator, voyagerPrefixList, 15, 3)
    print(output("Voyager", voyager))

运行结果如下：

    darkcoding credit card generator

    Mastercard
    ----------
    5249241445603178
    5474662131739768
    5581517450441661
    5588253309068355
    5514774944030079
    5122826749528287
    5152966434002124
    5268127987312292
    5385676074198087
    5330181839518097

    VISA 16 digit
    -------------
    4539503803848378
    4716973052847436
    4556149936260376
    4486565514724761
    4556309354978160
    4486560485591158
    4916213564870669
    4486704671699934
    4532839100193192
    4486613519985266

    VISA 13 digit
    -------------
    4929905559973
    4556870828321
    4916868200216
    4556189916056
    4024007171180

    American Express
    ----------------
    376197656730660
    342421777432696
    342896016604918
    343458311286898
    374543958196088

    Discover
    --------
    6011676180456692
    6011298953567876
    6011699666196053

    Diners Club / Carte Blanche
    ---------------------------
    30066643308583
    38302315481859
    38251784096120

    enRoute
    -------
    214935400146170
    201435309964331
    201450317314858

    JCB
    ---
    3506641780149880
    3561856856065701
    3508395818816022

    Voyager
    -------
    869984254736122
    869938197246102
    869921075232782

希望本文所述对大家的Python程序设计有所帮助。