1 day

1：
name = "你好，世界"
print(name )

了解到python中输出语句使用。


2：


age_of_oldboy = 56
for i in range(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!")
else:
    print("you have tried too many times..fuck off")
这是一个猜年龄的小游戏，但是只能猜3次。


3：

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
else:
    print("you have tried too many times..fuck off")
同上面一样也是通过循环实现3次猜谜游戏。但是不同点在于一个用for 一个用while 个人感觉while会好用一些。

4：


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
在以上的基础上加以衍生，优化出了可操控是否继续游戏的功能。

5：


name = input("name:")
#raw_input 2.x   input 3.x
#input 2.x =
age = int(input("age:") ) #integer
print(type(age)   , type(  str(age) ))
job = input("job:")
salary  = input("salary:")

info = '''
-------- info of  %s  -----
Name:%s
Age:%d
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)

3中格式，或者说3种方式。

6：

# Author:Alex Li
import getpass

_username = 'alex'
_password = 'abc123'
username = input("username:")
#password = getpass.getpass("password:")
password = input("password:")
if _username == username and _password == password:
    print("Welcome user {name} login...".format(name=username))
else:
    print("Invalid username or password!")
用户登录程序，大体思路为现将用户信息存入，然后再将输入的用户信息与之对比，通过if语句进行判断，通过弹出相应信息，
弹出错误提升。
优化方案，在前面加上循环实现3次错误退出程序。

7：

# 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
    print("hehe...")
'''

for i in range(10):
    print('----------',i)
    for j in range(10):
        print(j)
        if j >5:
            break
此程序用于训练for循环嵌套。

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