day1内容

guess.py

age_of_oldboy = 56

count = 0
while True:
    if count ==3:
        break
    guess_age = int(input("guess age:"))
    if guess_age == age_of_oldboy :
            print("You are right")
            break
    elif guess_age > age_of_oldboy :
            print("think smaller...")
    else:
            print("think bigger!")
    count +=1

    #count +=1等同count = count + 1
+++++++++++++++++++++++++++++
guess 优化.py

age_of_oldboy = 56

count = 0
while count<3:

    guess_age = int(input("guess age:"))
    if guess_age == age_of_oldboy :
        print("You are right")
        break
    elif guess_age > age_of_oldboy :
        print("think smaller...")
    else:
        print("think bigger!")

    count = count + 1
#if count == 3:
else:
    print("You have tried too many times......fuck off")
    #count +=1等同count = count + 1
++++++++++++++++++++++++++++
guess for.py

age_of_oldboy = 56

for i in range(3):

    guess_age = int(input("guess age:"))
    if guess_age == age_of_oldboy :
        print("You are right")
        break
    elif guess_age > age_of_oldboy :
        print("think smaller...")
    else:
        print("think bigger!")

#if count == 3:
else:
    print("You have tried too many times......fuck off")
    #count +=1等同count = count + 1
+++++++++++++++++++++++++++++++++

info3 ='''
------------- info  of {0}----------
Name:={0}
Age:={1}
Job:={2}
Salary:={3}
''' .format(name,Age,Job,Salary)

print(info3)

#print  (info)
+++++++++
login.py

_username = "a"
_passwd ="123"

username = input("username:")
passwd = input("passwd:")
print(username,passwd)

if _username == username and _passwd == passwd:
    print("Welcome user {name} login.....".format(name= username))   #强制缩进，省去结束符
else:
    print("Invalid username or password!")
+++++++++++++++++++++++
passwd.py

import getpass   #导入getpass

_username = "a"
_passwd ="123"

username = input("username:")
#passwd = getpass.getpass("passwd:")   #getpass密文密码
passwd = input("passwd:")
print(username,passwd)

if _username == username and _passwd == passwd:
    print("Welcome user {name} login.....".format(name= username))   #强制缩进，省去结束符
else:
    print("Invalid username or password!")
++++++++++++++++++++++++++++++++++++
vav2.py

print("Hello World!")
name = "Cedar Li"
print("my name is",name)
name2 = name


msg = "what's your name?"
'''
name = "PaoChe Ge"
print(name,name2)
gf_of_oldboy = "Chen rong hua"
GFOfOldboy ="chen rong hua"
'''

print("what",msg)
+++++++++++++
while.py

'''count = 0
while True:
    print("count:",count)
    count = count + 1 #count+ =1
    if count == 1000:
        break
        #break 中止运行
'''


for i in range(0,10,3):
    print("loop:",i)
++++++++++++++
while continue.py

'''
for i in range(0,10):
    if i < 3:
        print("loop:",i)
    else:
        continue  #continue跳出本次循环，继续下次循环；break是结束整个循环，所以I>3之后，后面就不执行。
    print("hehe.......")
'''

for i in range(10):
    print("__________",i)

    for j in range(10):
        print(j)
        if j >5:
            break   #break结束当前循环，也就是for这个循环。
++++++++++++++++++++
登录3次锁定

username = "abc"
passwd = "123"


count = 0

while count <3:
    _username = input("username:")
    _passwd = input("passwd:")
    if username == _username and passwd == _passwd:
        print("Welcome {name} login......".format(name=_username))
        break
    else:
        print("{name} are wrong,You are wrong number {number},Please try agee!".format(name=_username,number=count+1))
    count +=1
    if count ==3:
       print("You are wrong {number} ,Please try atry".format(number=count))