python

# __author__ = 'LiuRen'#1.单行注释用##2.多行注释用2个'''#3.打印用print加()#4.此外可以用多行注释直接赋值给某个变量msg='''    name="刘仁"    print(name)    '''print(msg)#5.用户交互输入用input(注意顶格写否则会报缩进错误)#username = input("username:")#password = input("password:")#print(username, password)#6.3种格式化输出的方式:username=input("username:")age=int(input("age:"))job=input("job:")salary=input("salary:")info1='''        ------info of %s------        username:%s        age:%d        job:%s        salary:%s    '''%(username,username,age,job,salary)print(info1)info2='''        ------info of {_username}------        username:{_username}        age:{_age}        job:{_job}        salary:{_salary}    '''.format(_username=username,_age=age,_job=job,_salary=salary)print(info2)info3='''        ------info of {0}------        username:{0}        age:{1}        job:{2}        salary:{3}    '''.format(username,age,job,salary)print(info3)