python中if else流程判断

发布时间:2019-08-06 09:14:09编辑:auto阅读(1376)

    1、python中实现密码密文输入

    #!/usr/bin/env python
    
    import getpass   #调用getpass模块就能实现密码密文显示
    
    username=input("username:")
    userpasswd=getpass.getpass("userpasswd:")
    
    print(username,userpasswd)

    2、if 判断

    (1)、

    #!/usr/bin/env python
    
    _username = "lijinzhu"
    _userpasswd = "abc123"
    username = input("username:")
    userpasswd = input("userpasswd:")
    
    if _username == username and _userpasswd == userpasswd:
        print("Welcome usr {name} login...".format(name=username))
    else:
        print("Invalid username or passwd!")

    (2)、猜年龄

    #!/usr/bin/env python
    
    _age = 18
    age = int(input("age:"))
    
    if _age == age:
        print("right")
    elif _age > age:
        print("think smaller...")
    else:
        print("think strong...")
    

    #Note:
    if 条件判断:
    ...
    elif 条件判断:
    ...
    else:
    ...

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