user.py
def add_user(self):
        '''
        add_user method adds user objects into users_list
        '''
        User.users_list.append(self)

        add_user method adds user objects into users_list
        
add_user method adds user objects into users_list
add_user method adds user objects into users_list
def add_user(self):
        User.users_list.append(self)
def add_user ( self ) : User . users_list . append ( self )
add_user method adds user objects into users_list
add_user method adds user objects into users_list
'''
        add_user method adds user objects into users_list
        '''
self