python学习日记day1

下载 python  官网  https://www.python.org 
下载 pycharm 官网  http://www.jetbrains.com/pycharm/ 

我用的是 python3.7 现在最新

第一天学的命令

1、---------------------------
print("hello world!")


2、---------------------------

name=input("name:")
Age=int(input("Age:"))

info1='''
---------info1 name %s-----
name:%s
Age:%d
'''%(name,name,Age)

info2='''
------info2 of {_name}-----
Name:{_name}
Age:{_Age}
'''.format(
    _name=name,
    _Age=Age )
info3='''
------info3 of {0}--------
Name:{0}
Age:{1}
'''.format(name,Age )
print(info1)
print(info2)
print(info3)


3、-----------------------

for i in range (10):
    print("i:",i)
    i+=1
count=0
while True:
    print("count:",count)
    count+=1
    if count==10:
        break

if count ==9:
    print("count==9")
else:
    print("count!=9")


4、-------------------------

user1="jianwei"
password1="abc123"
user2="liangliang"
password2="321cba"

while True:
    _user=input("User:")
    if _user==user1 :
        p_count=0
        for i in range (3):
            _pw=input("Password:")
            if _pw==password1:
                print("Login success!")
                break
            else:
                print("Login failure!")
                if i==2:
                    str1='''Account:%s is locked!!!'''%user1
                    print(str1)
                    user1="jianweilocked"
        break
    elif _user==user2:
        p_count = 0
        for i in range(3):
            _pw = input("Password:")
            if _pw == password2:
                print("Login success!")
                break
            else:
                print("Login failure!")
                if i == 2:
                    str1 = '''Account:%s is locked!!!''' % user2
                    print(str1)
                    user1 = "jianweilocked"
        break
    else:
        print("There is no such user!")



2018-04-20 17:24:35