15位身份证补全为18位身份证的python实现

主要是看到了别人的算法：http://blog.jobbole.com/111556/
我自己写了个python的代码实现,感谢大侠去研究这样的算法

def transIDCard15To18(IdCardNo):
    ll=[]
    if IdCardNo is not None and len(IdCardNo.strip())==15:
        IdCardStr=IdCardNo.strip()
        for i in IdCardStr:
            ll.append(i)
        ll.insert(6,'9')
        ll.insert(6,'1')
        ll.append(transCardLastNo(ll))
    return "".join(ll)



def transCardLastNo(IDCardList):
    co=[7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2]
    varCode=['1','0','X','9','8','7','6','5','4','3','2']
    result=0
    for i in range(len(IDCardList)):
        result+=int(IDCardList[i]) * co[i]

    residue=result%11
    return varCode[residue]



print(transIDCard15To18("370986890623212"))
print(transIDCard15To18("370725881105149"))

结果如下：

./id15to18.py
370986198906232123
37072519881105149X