第一周

三种格式化输出

 

# Author:Alex Li

 

 

name = input("name:")

#raw_input 2.x   input 3.x

#input 2.x =

age = int(input("age:") ) #integer           类型转换

print(type(age)   , type(  str(age) ))

job = input("job:")

salary  = input("salary:")

 

info = '''

-------- info of  %s  -----

Name:%s

Age:%d     相当于占位符，d代表int,s代表字符串

Job:%s

Salary:%s

''' % (name,name,age,job,salary)

 

info2 = '''

-------- info of {_name}  -----

Name:{_name}

Age:{_age}

Job:{_job}

Salary:{_salary}

'''.format(_name=name,

           _age=age,

           _job=job,

           _salary=salary)

 

info3 =  '''

-------- info of {0} -----

Name:{0}

Age:{1}

Job:{2}

Salary:{3}

'''.format(name,age,job,salary)

print(info3)

 

 

 

判断用户登录时用户名和密码是否匹配，密文方式

# Author:Alex Li

import getpass      导入模块

 

_username = 'alex'

_password = 'abc123'

username = input("username:")

#password = getpass.getpass("password:")    用密文的方式输入密码，即屏幕上在输入密码的时候不打印输入的信息

password = input("password:")

if _username == username and _password == password:

    print("Welcome user {name} login...".format(name=username))

else:

    print("Invalid username or password!")

 

 

indentationError,表示的时候缩进错误

 

 

while 循环

 

# Author:Alex Li

 

age_of_oldboy = 56

 

count = 0

这种语法还是比较方便的，C++里反正是没有

while count <3:

    guess_age = int(input("guess age:") )

    if guess_age == age_of_oldboy :

        print("yes, you got it. ")

        break                                跳出循环

    elif guess_age > age_of_oldboy:

        print("think smaller...")

    else:

        print("think bigger!")

    count +=1

else:

    print("you have tried too many times..fuck off")

 

 

for 循环

 

# Author:Alex Li

'''

count = 0

while True:

    print("count:",count)

    count = count +1  #count +=1

    if count == 1000:

        break

'''

'''

for i in range(0,10):

    if i <3:

        print("loop ",i)

    else :

        continue                  continue  跳出当前这次的循环

    print("hehe...")

'''

 

for i in range(10):                   range(10):    0~10

    print('----------',i)

    for j in range(10):

        print(j)

        if j >5:

            break                       break 结束整个循环

 

 

 

 

 

while 循环优化，选择是否继续guess

 

 

age_of_oldboy = 56

 

count = 0

while count <3:

    guess_age = int(input("guess age:") )

    if guess_age == age_of_oldboy :

        print("yes, you got it. ")

        break

    elif guess_age > age_of_oldboy:

        print("think smaller...")

    else:

        print("think bigger!")

    count +=1

    if count == 3:

        countine_confirm = input("do you want to keep guessing..?")

        if countine_confirm != 'n':

            count =0

#else:

#    print("you have tried too many times..fuck off")