课后作业14讲：密码安全性检查代码

MaxFireGun

check_mark='~!@#$%^&*()_=-/,.?<>;:[]{}|\\'\

# print(check_mark)

while True:

    code = input('Please input ur code here:')
    
    code_len = len(code)
    
    Flag = True
    
    f_check_list=[0,0,0] #[alpha, number, mark]
    
    for i in code:
        if i.isalpha():
            f_check_list[0] += 1
        elif i.isdigit():
            f_check_list[1] += 1
        elif i in check_mark:
            f_check_list[2] += 1
        else:
            print('Ur code is not standard. Some symbols are not allowed! Please check the code rules as follow: ****')
            Flag = False
            break  

######Check whether there is symbol that is not included in the check_mark######    
    if Flag == False:
        continue    
    else:
        pass
########################################################################


    #print(f_check_list)
    
    if code_len <= 8 and ((f_check_list[0] > 0 or f_check_list[1] > 0) and f_check_list[2] == 0):
        print('Ur code is in low security level')
        break
    
    elif code_len > 8 and int(bool(f_check_list[0])) + int(bool(f_check_list[1])) + int(bool(f_check_list[2])) == 2:
        print('Ur code is in medium security level')
        break
        
    elif code_len >= 16 and code[0].isalpha() and (f_check_list[0] > 0 and f_check_list[1] > 0 and f_check_list[2] > 0):
        print('Ur code is in high security level')
        break
        
    else:
        print('Ur code is not standard. Please check the code rules as follow: *********')

课后作业说明：
1. 对于满足题目中所给要求的密码，会给出相应的密码安全等级，然后跳出循环。
2.对于不符号不在列表里的，会及时跳出for和while循环，节约计算时间。同时给出'Ur code is not standard. Some symbols are not allowed! Please check the code rules as follow: ****'的提示，并让客户继续输入密码。
2. 对于不满足所有三种要求的密码，会给出'Ur code is not standard, Please check the code rules as follow: balablabla'的提示，并继续让客户输入密码。
3. ‘#’后面的是在测试的过程中用来打印相应的数据，查看程序跑得是否正确，可以忽略。

Beer! Cheers!!