#
#

def login(UUID,password):

    return

def logout(UUID):

    return

def signup(username,password):

    return UUID

def UserInfoModified(firstname,lastname,birthday,registerdate,balance,sex,telephone,right):

    return

def query():

#用户行为
def UserBorrow():
    #

def UserReturn():
    #

def UserRenew():
    #

def UserOverdue():
    #

def AddLibrian():
    #


#图书馆管理员一系列操作
def LibRemoveBook():
    #

def LibAddBook():
    #

def LibDeleteUser():
    #
