python 身份证15位转18位

原文：https://www.jianshu.com/p/d68e9e525392

# encoding: utf-8
"""
Created on 19-11-05

@author: xusl
"""

wi = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1, ]
vi = [1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2, ]

def get_verity(eighteen_card):
    """

    :param eighteen_card:
    :return:
    """
    ai = []
    remaining = ''
    if len(eighteen_card) == 18:
        eighteen_card = eighteen_card[0:-1]
    if len(eighteen_card) == 17:
        s = 0
        for i in eighteen_card:
            ai.append(int(i))
        for i in range(17):
            s = s + wi[i] * ai[i]
        remaining = s % 11
    return 'X' if remaining == 2 else str(vi[remaining])


def up_to_eighteen(fifteen_card):
    """
    15位转18位
    :param fifteen_card:
    :return:
    """
    eighteen_card = fifteen_card[0:6] + '19' + fifteen_card[6:15]
    return eighteen_card + get_verity(eighteen_card)


def down_to_fifteen(eighteen_card):
    """
    18位转15位
    :param eighteen_card:
    :return:
    """
    return eighteen_card[0:6] + eighteen_card[8:17]


if __name__ == '__main__':
    # 15位转18位
    card_1 = up_to_eighteen('632123820927051')
    print(card_1)
    # 18位转15位
    card_2 = down_to_fifteen('410125199908222000')
    print(card_2)