身份证号码有效性验证（python实现）

--------------python实现-------------
import re
#Errors=['验证通过!','身份证号码位数不对!','身份证号码出生日期超出范围或含有非法字符!','身份证号码校验错误!','身份证地区非法!']
def checkIdcard(idcard):
    Errors=['验证通过!','身份证号码位数不对!','身份证号码出生日期超出范围或含有非法字符!','身份证号码校验错误!','身份证地区非法!']
    area={"11":"北京","12":"天津","13":"河北","14":"山西","15":"内蒙古","21":"辽宁","22":"吉林","23":"黑龙江","31":"上海","32":"江苏","33":"浙江","34":"安徽","35":"福建","36":"江西","37":"山东","41":"河南","42":"湖北","43":"湖南","44":"广东","45":"广西","46":"海南","50":"重庆","51":"四川","52":"贵州","53":"云南","54":"西藏","61":"陕西","62":"甘肃","63":"青海","64":"宁夏","65":"新疆","71":"台湾","81":"香港","82":"澳门","91":"国外"}
    idcard=str(idcard)
    idcard=idcard.strip()
    idcard_list=list(idcard)

    #地区校验
    if(not area[(idcard)[0:2]]):
        print Errors[4]
    #15位身份号码检测
    if(len(idcard)==15):
        if((int(idcard[6:8])+1900) % 4 == 0 or((int(idcard[6:8])+1900) % 100 == 0 and (int(idcard[6:8])+1900) % 4 == 0 )):
            erg=re.compile('[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}$')#//测试出生日期的合法性
        else:
            ereg=re.compile('[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}$')#//测试出生日期的合法性
        if(re.match(ereg,idcard)):
            print Errors[0]
        else:
            print Errors[2]
    #18位身份号码检测
    elif(len(idcard)==18):
        #出生日期的合法性检查
        #闰年月日:((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))
        #平年月日:((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))
        if(int(idcard[6:10]) % 4 == 0 or (int(idcard[6:10]) % 100 == 0 and int(idcard[6:10])%4 == 0 )):
            ereg=re.compile('[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}[0-9Xx]$')#//闰年出生日期的合法性正则表达式
        else:
            ereg=re.compile('[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}[0-9Xx]$')#//平年出生日期的合法性正则表达式
        #//测试出生日期的合法性
        if(re.match(ereg,idcard)):
            #//计算校验位
            S = (int(idcard_list[0]) + int(idcard_list[10])) * 7 + (int(idcard_list[1]) + int(idcard_list[11])) * 9 + (int(idcard_list[2]) + int(idcard_list[12])) * 10 + (int(idcard_list[3]) + int(idcard_list[13])) * 5 + (int(idcard_list[4]) + int(idcard_list[14])) * 8 + (int(idcard_list[5]) + int(idcard_list[15])) * 4 + (int(idcard_list[6]) + int(idcard_list[16])) * 2 + int(idcard_list[7]) * 1 + int(idcard_list[8]) * 6 + int(idcard_list[9]) * 3
            Y = S % 11
            M = "F"
            JYM = "10X98765432"
            M = JYM[Y]#判断校验位
            if(M == idcard_list[17]):#检测ID的校验位
                print Errors[0]
            else:
                print Errors[3]
        else:
            print Errors[2]
    else:
        print Errors[1]