Python学习之：类和面向对象

import logging
logging.basicConfig(level=logging.INFO)

class PasswordTool:

    def __init__(self,password):
        self.password = password
        self.strength_level = 0

    def process_password(self):

        if len(self.password) >= 8:
            self.strength_level += 1
        else:
            logging.info('密码长度要求至少8位！')

        if self.check_number_exist():
            self.strength_level += 1
        else:
            logging.info('密码长度要求包含数字！')

        if self.check_letter_exist():
            self.strength_level += 1
        else:
            logging.info('密码长度要求包含字母！')

    def check_number_exist(self):
        has_number = False
        for c in self.password:
            if c.isnumeric():
                has_number = True
                break
        return has_number

    def check_letter_exist(self):
        has_letter = False
        for c in self.password:
            if c.isalpha():
                has_letter = True
                break
        return has_letter

def main():

    try_times = 5

    while try_times > 0:

        password = input('请输入密码：')
        password_tool = PasswordTool(password)
        password_tool.process_password()

        f = open('password.txt','a')
        f.write('密码：{},强度：{}\n'.format(password,password_tool.strength_level))
        f.close()

        if password_tool.strength_level == 3:
            print('恭喜！密码强度合格！')
        else:
            print('密码强度不合格！')
            try_times -= 1

        print()

        if try_times <= 0:
            print('尝试次数过多，密码设置失败！')

if __name__ == '__main__':
    main()