day13 process-oriented programming

Process-oriented programming:

Programming ideas for a programming.

Process-oriented programming:

The core is the "process" the word, the process is worthy of a problem-solving steps, which is to do and then do the programming ideas based on written procedures, designed like a factory assembly line, a mechanical way of thinking.

advantage:

The complex issue processes, thus simplifying

Disadvantages:

If a certain part of the current program design modifications, it will lead to other parts need to be modified at the same time, poor scalability.

Indeed affect the whole body

example:

# 注册功能Demo
def register():
    # 1.设计先让用户输入用户名和密码，校验合法性，得到合法的用户名与密码
    user, pwd = get_user_pwd()

    # 2.设计字符串的拼接, 得到拼接好的字符串
    user_pwd_str = cut_user_pwd(user, pwd)

    # 3.开始写入文件
    save_data(user_pwd_str)


# 1.先让用户输入用户名和密码，校验合法性
def get_user_pwd():
    while True:
        # 让用户输入用户名与密码
        username = input('请输入用户名:').strip()
        # 校验用户名是否为 英文字母  str.isalpha 校验英文字母、中文
        if username.isalpha():
            break
        else:
            print('用户名不合法')

    while True:
        password = input('请输入密码:').strip()
        re_password = input('请确认密码:').strip()
        # 校验两次密码是否一致
        if password == re_password:
            break
        else:
            print('两次密码不一致。')

    return username, password


# 2.拼接用户字符串
def cut_user_pwd(user, pwd):
    user_pwd_str = f'{user}:{pwd}\n'
    return user_pwd_str


# 3.保存用户数据，写入文件中
def save_data(user_pwd_str):
    with open('user.txt', 'a', encoding='utf-8') as f:
        f.write(user_pwd_str)


register()

如果需求加入用户角色需求。
# 1.先让用户输入用户名和密码、用户角色，校验合法性
def get_user_pwd():
    while True:
        # 让用户输入用户名与密码
        username = input('请输入用户名:').strip()
        # 校验用户名是否为 英文字母  str.isalpha 校验英文字母、中文
        if username.isalpha():
            break
        else:
            print('用户名不合法')

    while True:
        password = input('请输入密码:').strip()
        re_password = input('请确认密码:').strip()
        # 校验两次密码是否一致
        if password == re_password:
            break
        else:
            print('两次密码不一致。')

    # 作业: 保证用户输入的角色范围 [普通用户、管理员用户、超级用户]
    user_role = input('请输入用户角色:').strip()

    return username, password, user_role


# 2.拼接用户字符串
def cut_user_pwd(user, pwd, user_role):
    user_pwd_str = f'{user}:{pwd}:{user_role}\n'
    return user_pwd_str, user


# user = 'tank'
# user_name = user

# 3.保存用户数据，写入文件中
# 每一个用户保存一个文件,以用户的名字当做文件名
def save_data(user_pwd_str, user_name):
    with open(f'{user_name}.txt', 'w', encoding='utf-8') as f:
        f.write(user_pwd_str)


# 注册功能Demo
def register():
    # 1.设计先让用户输入用户名和密码，校验合法性，得到合法的用户名与密码
    user, pwd, user_role = get_user_pwd()

    # 2.设计字符串的拼接, 得到拼接好的字符串
    user_pwd_str, user_name = cut_user_pwd(user, pwd, user_role)

    # 3.开始写入文件
    save_data(user_pwd_str, user_name)


register()