[Python] Django Ninja API schema circular import error

I have UserSchema:

# users/models.py
class User(AbstractUser):
...


# users/schemas.py
from typing import List
from tasks.schemas import TaskSchema

class UserSchema(ModelSchema):
tasks: List[TaskSchema] = []

class Config:
model = User
...


...and TaskSchema:

# tasks/models.py
class Task(models.Model):
...
owner = models.ForeignKey(User, related_name="tasks", on_delete=models.CASCASE)


# tasks/schemas.py
from users.schemas import UserSchema

class TaskSchema(ModelSchema):
owner: UserSchema

class Config:
model = Task
...


But it throws:

ImportError: cannot import name 'TaskSchema' from partially initialized module 'tasks.schemas' (most likely due to a circular import) (/Users/myname/codes/django/ninja-api/tasks/schemas.py)


What I want to do is that I want to fetch:

1. GET /api/todos - a list of tasks with related owners
2. GET /api/todos/{task_id} - a task with owner
3. GET /api/users/{user_id} - a user with a list of owned tasks

Versions:

python = ^3.11
django = ^4.1.5
django-ninja = ^0.20.0

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