python学习之自动化开发-DAY1作业-登陆程序

这个是再老男孩教育视频学习的day1课程，主要锻炼下字典的操作，以及文件的创建和读取等，代码如下：

#!/use/bin/env python
#_*_ coding:utf-8 _*_
'''
定义一个用户名密码文件，如果输入的用户名及密码符合用户名密码文件，那么，允许登陆；
否则，打印用户名密码错误，如果，重复登陆同一用户名3次，则把此用户名锁定，不允许再登陆。
'''
#usr_book={'admin':'123456','frank':'1126'}
with open('usr_book.txt','r') as f:
    usr_book={}
    for line in f:
        #print(line)
        k,v=line.split()
        #print(k,v)
        usr_book[k]=v
    print(usr_book)
lock_name=[]
try:
    for line in open('usr_lock.txt'):
        #print(line.strip())
        if line not in lock_name:
            lock_name.append(line.strip())
except:
    print('')
print(lock_name)
usr_lock={}
exit=False

while True:
    exit = input('press "e"to exit,press anykey to continue:')
    if exit=='e' or exit=='E':
        break
    else:
        usr_name=input('Please input your user name 
')
        usr_code=input('Please input your user password
')
        if usr_name in usr_book.keys() and usr_code==usr_book[usr_name]:
            print('Welcome Land,%s'%usr_name)
            break
        elif usr_name in lock_name or usr_lock.get(usr_name,0)>=2:
            lock_name.append(usr_name)
            print('Sorry,this user has been locked! Please try another')
        else:
            usr_lock[usr_name]=usr_lock.get(usr_name,0)+1
            print('Sorry,invalid user name or password')
print(lock_name)
f=open('usr_lock.txt','w')
f.write('
'.join(lock_name))
f.close()

 2018-04-12：更新了一下代码，先判断用户名，如果用户名已被锁定，直接打印用户名锁定信息；否则再判断密码，代码如下：

#!/use/bin/env python
#_*_ coding:utf-8 _*_
'''
定义一个用户名密码文件，如果输入的用户名及密码符合用户名密码文件，那么，允许登陆；
否则，打印用户名密码错误，如果，重复登陆同一用户名3次，则把此用户名锁定，不允许再登陆。
'''
#usr_book={'admin':'123456','frank':'1126'}
with open('usr_book.txt','r') as f:
    usr_book={}
    for line in f:
        #print(line)
        k,v=line.split()
        #print(k,v)
        usr_book[k]=v
    print(usr_book)
lock_name=[]
try:
    for line in open('usr_lock.txt'):
        #print(line.strip())
        if line not in lock_name:
            lock_name.append(line.strip())
except:
    print('')
#print(lock_name)
usr_lock={}
exit=False

while True:
    exit = input('press "e"to exit,press anykey to continue:')
    if exit=='e' or exit=='E':
        break
    else:
        usr_name=input('Please input your user name 
')
        if usr_name in usr_book.keys():
            usr_code=input('Please input your user password
')
            if usr_code==usr_book[usr_name]:
                print('Welcome Land,%s'%usr_name)
                break
            else:
                print('Sorry,invalid code!')
        elif usr_name in lock_name:
            print('Sorry,this user has been locked! Please try another')
        elif usr_lock.get(usr_name,0)>=2:
            lock_name.append(usr_name)
            print('Sorry,this user has been locked! Please try another')
        else:
            usr_lock[usr_name]=usr_lock.get(usr_name,0)+1
            print('Sorry,invalid user name or password')
#print(lock_name)
f=open('usr_lock.txt','w')
f.write('
'.join(lock_name))
f.close()