import shelve
import time
class UserData(object):
"""13-4. 用户注册."""
def __init__(self, fn):
self.op = shelve.open(fn)
def __del__(self):
self.op.close()
def register(self):
nm = self.cmdInput('UserName:')
if self.isExit(nm):
print('Username"%s"have been exited' % nm)
return False
pwd = self.cmdInput('Passward:')
c_pwd = self.cmdInput('Confirm:')
if pwd != c_pwd:
print('Passward not match!')
return False
self.op[nm] = [pwd]
print('Register new user successfully!')
def login(self):
nm = self.cmdInput('UserName:')
if not self.isExit(nm):
print('Username"%s"not exited!' % nm)
return False
pwd = self.cmdInput('Passward:')
if pwd == self.op[nm][0]:
if len(self.op[nm]) < 2:
List = self.op[nm]
List.append(self.timer())
self.op[nm] = List
print('Welcome Login!')
return
if self.checkLoginTime(nm):
print('Welcome Back!you already login time:%s.' \
% (time.ctime(self.op[nm][1]) ))
else:
self.op[nm][1] = self.timer()
print(time.ctime(self.op[nm][1]))
print('Welcome Login!')
else:
print('Passward incorrect!')
def checkLoginTime(self, nm):
if (self.timer() - self.op[nm][1]) / 3600 <= 4:
return True
return False
def timer(self):
return time.time()
def isExit(self, nm):
if self.op:
for name in self.op.keys():
if nm == name:
return True
return False
def updatePwd(self):
nm = self.cmdInput('UserName:')
if not self.isExit(nm):
return False
pwd = self.cmdInput('OriginPassward:')
if pwd == self.op[nm][0]:
npwd = self.cmdInput('NewPassward:')
List = self.op[nm]
List[0] = npwd
self.op[nm] = List
else:
print('Origin Passward incorrect!')
def cmdInput(self, string, flag=True):
try:
if True == flag:
reciever = input(string).strip()
else:
reciever = input(string).strip()[0].lower()
except(KeyboardInterrupt, SystemExit):
reciever = 'Error'
print('Abort bymanually!')
return reciever
def admin(self):
enter = self.cmdInput('Delete user info? YES or NO?', False)
if 'n' == enter:
print(self.op.keys())
elif 'y' == enter:
nm = self.cmdInput('Enter user name:')
try:
self.op.pop(nm)
except Exception:
print(nm, 'not found!')
return
def menu():
prompt = '''
---------------------
[R]egister
[L]ogin
[U]pdatePwd
[A]dminstrator
---------------------
'''
ud = UserData('DBM')
func = {
'r': ud.register,
'l': ud.login,
'u': ud.updatePwd,
'a': ud.admin
}
while True:
enter = ud.cmdInput(prompt, False)
if 'Error' == enter:
break
if enter in 'urla':
func[enter]()
else:
print('choose from ''URLA''')
menu()
