学习python,第二篇

注释

#  单行注释

'''   多行注释 '''      或者    """ 多行注释 """

# Author: Itxpl

mag = '''  usersname = input("usersname:")
password = input("password:")
print(username,password)'''
print(mag)

name = input("name:")
age = int(input("age:")) #integer
print(type(age))
job = input("job:")
salary = input("salary:")

info = '''
--------------- info of %s -------------------
Name:%s
Age:%s
Job:%s
salary:%s
''' %(name,name,age,job,salary)

#常用的是下面这一种

info2 = '''
------------------info of {_name} --------------
Name:{_name}
Age:{_age}
Job:{_job}
Salary:{_salary}
'''.format(_name=name,
               _age=age,
               _job=job,
               _salary=salaty)

info = '''
--------------------info of {0} ----------------
Name:{0}
Age:{1}
Job:{2}
Salary:{3}
'''.format(name,age,job,salary)

print(info2)

用户输入

import getpass    #调用python自带的库
username = input("username:")
password = getpass.getpass("password:")
print(username,password)    #输入的密码是暗文，在python中不能执行，在其他解释器中可以

_username = "itxpl"
_password = "asd123"
username = input("username:")
password = input("password:")
if _username == username and  _password == password: #加冒号
     print("Welcome user {name} login...".format(name = username))  #自动缩进，强制，省掉了结束符，结构清晰
else:     #和if是同级，所以不缩进
      print("Invaid username or password!")  # 是子语句

以上有个错误，

#输入密码是暗文，在pycharm中不能运行，不是python