python写的随机生成身份证号码的函数

= time.strptime(x1[6:12], '%y%m%d')
    except:
        return u'时间错误，非合法时间'

    if xlen == 18:
        y = 0
        for i in range(17):
            y += int(x1[i]) * ARR[i]

        if LAST[y % 11] != x1[-1].upper():
            return u'验证码错误'

    return u'YES'

def