I have a list that store User objects:

profiles_catalog = []

and the 'User' object:

cont = 1

class User:

    def __init__(self, name, password):
        global cont

        self.registry = cont
        self.name = name
        self.password = password
        self.liked = []
        self.matches = []

        cont  = 1

    def __str__(self) -> str:
        return f'Registry: {self.registry}, Name: {self.name}, Password: {self.password}, Liked_list: {self.liked}, matches: {self.matches}'

    def __dict__(self) -> dict:
        return {'Registry': {self.registry}, 'Name': {self.name}, 'password': {self.password}, 'Liked list': {self.liked}, 'matches': {self.matches}}

    @property
    def call_name(self) -> None:
        return self.name

    @property
    def call_password(self) -> None:
        return self.password

    @property
    def call_liked_list(self) -> None:
        return self.liked

    @call_liked_list.setter
    def model_like_profile(self, liked_user) -> None:
        self.liked.append(liked_user)
        return f'{liked_user.name} got liked'

    def see_matches(self) -> None:
        return self.matches

This is supposed to be a dating app, as tinder or something, that show random profiles to user and it should be able to like profile or keep seeing other profiles.

To do that, I write functions show_random_profile() and main_like_profile():

def show_random_profile():

    displayed_user = profiles_catalog[randint(0, len(profiles_catalog) - 1)]
        
    return displayed_user

and

def main_like_profile(control_user, displayed_user):
    
    liking_user = control_user
    liked_user = displayed_user
    
    liking_user.model_like_profile(liking_user, liked_user)
    print('User liked!')

but I'm keeping getting TypeError:

Traceback (most recent call last):
  File "c:\Users\Lucas\Documents\LUCAS\programacao\python\meus_projetos\twindder\controller.py", line 140, in <module>
main()
  File "c:\Users\Lucas\Documents\LUCAS\programacao\python\meus_projetos\twindder\controller.py", line 109, in main
main_like_profile(control_user, displayed_user)
  File "c:\Users\Lucas\Documents\LUCAS\programacao\python\meus_projetos\twindder\controller.py", line 34, in main_like_profile
liking_user.model_like_profile(liking_user, liked_user)
TypeError: 'list' object is not callable

The way I see, the problem is that a list object it is been assign to a variable that should take User, is that right?

If so, how can I assign to displayed_user a random User object stored in profiles_catalog?

Or there is any other way to solve this problem?

CodePudding user response：

With your current code, you define the model_like_profile method with the decorator @call_liked_list.setter applied to it, where call_liked_list is a property. This makes model_like_profile also refer to the same call_liked_list property. So, the line:

liking_user.model_like_profile(liking_user, liked_user)

... is equivalent to liking_user.call_liked_list(liking_user, liked_user), which is equivalent to liking_user.liked(liking_user, liked_user). Since liking_user.liked is a list, this line of code attempts to call a list as if it were a function, hence the TypeError.

Keeping the User class as you've written it, to access the functionality defined in model_like_profile, you could change from:

liking_user.model_like_profile(liking_user, liked_user)

to:

liking_user.model_like_profile = liked_user

Although this use of a property setter for adding to a list is generally not good practice - a property setter is usually used for assigning a new value, not adding to a list. Also, it is good practice for the property setter's method name to be the same as the getter's method name:

class MyClass:
    def __init__(self):
        self._value = 1

    @property
    def value(self):
        return self._value

    @value.setter
    def value(self, value):
        self._value = value