2018.9.19作业

#用户登录系统
with open(r'test',mode='r',encoding='utf-8') as f:    
    info=f.read()

info=info.replace('\n',':')
lis_info=info.split(':')                          

key=[]
value=[]
for a in range(0,len(lis_info)):
    if a % 2 ==0:
        key.append(lis_info[a])
    else:
        value.append(lis_info[a])

d={}
for i in range(0,len(key)):
    d.setdefault(key[i],value[i])

while True:
    name = input('请输入用户名：')
    pwd = input('请输入密码：')
    if name in d:
        if d[name] == pwd:
            print('登录成功！')
            break
        else:
            print('登录失败！')
    else:
        print('登录失败！')