CompanySerialNo/SerialNoChecker.py at master · kenduest/CompanySerialNo · GitHub

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# -*- coding: utf-8 -*-
"""
Created on Mon Jan 12 11:59:35 2015

@author: victor
"""

def company_serial_no_checker(serial):
    # 共八位，全部為數字型態
    if len(serial)!=8 or not serial.isdigit():
        return False

    # 各數字分別乘以 1,2,1,2,1,2,4,1
    # 例：統一編號為 53212539
    #
    # Step1 將統編每位數乘以一個固定數字固定值
    #   5   3   2   1   2   5   3   9
    # x 1   2   1   2   1   2   4   1
    # ================================
    #   5   6   2   2   2  10  12   9
    #

    serial_list = list(serial)
    coeff = [1, 2, 1, 2, 1, 2, 4, 1]

    # print serial_list

    # Define a list with 8 zeros
    multiple = [0]*8

    count = 0
    while count < 8:
        # print count
        temp = int(serial_list[count])*coeff[count]
        multiple[count] = temp if temp < 10 else (temp/10) + (temp % 10)
        count = count + 1

    # Step2 將所得值取出十位數及個位數
    # 十位數 個位數
    #   0      5
    #   0      6
    #   0      2
    #   0      2
    #   0      2
    #   1      0
    #   1      2
    #   0      9
    #
    # 並將十位數與個位數全部結果值加總
    #

    total = sum(multiple)

    # Step3 判斷結果
    # 第一種:加總值取10的餘數為0
    # 第二種:加總值取10的餘數等於9而且統編的第6碼為7

    if (total % 10 == 0):
        return True
    elif ((total + 1) % 10 == 0 and serial[5] == '7'):
        return True
    else:
        return False

if __name__=='__main__':
    # 位數不足
    #print company_serial_no_checker('5312539')   # false

    # 符合
    #print company_serial_no_checker('53212539')  # true

    # 不符合
    #print company_serial_no_checker('12222539')  # nil, 在邏輯判斷的時候也會被當false

    print company_serial_no_checker('27206130')