can not import name 'model' from 'app.model' - django

Question

I have two apps 'user' and 'game' and here is my user/models.py:
from django.db import models
from django.db.models.fields import related
from django.contrib.auth.models import AbstractBaseUser , User,
AbstractUser , PermissionsMixin
from .managers import CustomUserManager
from game.models import Game
class User(AbstractBaseUser,PermissionsMixin):
username = models.CharField(max_length=150,
unique=True, blank=True , null=True,)
email = models.EmailField( blank=True , null=True , unique=True)
password = models.CharField(max_length=100, null=True , blank=True)
objects = CustomUserManager()
class Meta:
db_table = 'user'
class Team(models.Model):
name = models.CharField(max_length=40, unique=True)
players = models.ManyToManyField(User,
related_name="players")
game = models.ManyToManyField(Game)
is_verfied = models.BooleanField(default=False)
class Meta:
db_table = 'team'
and here is my game/models.py:
from django.db import models
from user.models import User, Team
from leaga.settings import AUTH_USER_MODEL
class Game(models.Model):
name = models.CharField(max_length=50)
is_multiplayer = models.BooleanField(default=False)
class Event(models.Model):
title = models.CharField(max_length=100)
start_date = models.DateTimeField()
end_date = models.DateTimeField()
class Tournament(models.Model):
title = models.CharField(max_length=50)
is_team = models.BooleanField(default=False)
price = models.PositiveIntegerField()
info = models.TextField(max_length=1000)
user = models.ManyToManyField(AUTH_USER_MODEL,
related_name='tounament_user')
team = models.ManyToManyField(Team, related_name='team')
game = models.ForeignKey(Game, on_delete=models.CASCADE, related_name='tournament_game')
event = models.ForeignKey(Event, on_delete=models.CASCADE, related_name='tournament_event')
# some other code and classes here but unnecessary to mention
.
.
.
.
when i run :
python manage.py makemigrations user
this is the console log:
Traceback (most recent call last):
File "manage.py", line 21, in <module>
main()
File "manage.py", line 17, in main
execute_from_command_line(sys.argv)
File "/Users/amir/Desktop/leaga/.venv/lib/python3.7/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
utility.execute()
File "/Users/amir/Desktop/leaga/.venv/lib/python3.7/site-packages/django/core/management/__init__.py", line 357, in execute
django.setup()
File "/Users/amir/Desktop/leaga/.venv/lib/python3.7/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/Users/amir/Desktop/leaga/.venv/lib/python3.7/site-packages/django/apps/registry.py", line 114, in populate
app_config.import_models()
File "/Users/amir/Desktop/leaga/.venv/lib/python3.7/site-packages/django/apps/config.py", line 211, in import_models
self.models_module = import_module(models_module_name)
File "/Users/amir/Desktop/leaga/.venv/lib/python3.7/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 728, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/Users/amir/Desktop/leaga/leaga/user/models.py", line 6, in <module>
from game.models import Game
File "/Users/amir/Desktop/leaga/leaga/game/models.py", line 3, in <module>
from user.models import Team
ImportError: cannot import name 'Team' from 'user.models' (/Users/amir/Desktop/leaga/leaga/user/models.py)
I tried to delete all .pyc files from my project
also, drop the entire database and create again(i know it's probably not the point but I got angry and I dropped the entire database and recreate it

Answer 1

File "/Users/amir/Desktop/leaga/leaga/user/models.py", line 6, in
from game.models import Game
File "/Users/amir/Desktop/leaga/leaga/game/models.py", line 3, in
from user.models import Team
ImportError: cannot import name 'Team' from 'user.models' (/Users/amir/Desktop/leaga/leaga/user/models.py)
From the message we can see that this is due to circular imports.
user/models.py tries to import the Game model from game/models.py, and game/models.py tries to import the Team model from user/models.py.
One solution is to remove:
from game.models import Game
From user/models.py, and change:
game = models.ManyToManyField(Game)
To:
game = models.ManyToManyField('game.Game')
You might want to read: ForeignKey and ManyToManyField.
Relevant part copied here:
If you need to create a relationship on a model that has not yet been defined, you can use the name of the model, rather than the model object itself: