ImportError: cannot import name 'python_2_unicode_compatible' from 'celery.five'

Using Django
1

I change my python version from 2 to 3. After that when I run python3 manage.py runserver, I get this error.

Watching for file changes with StatReloader
Exception in thread django-main-thread:
Traceback (most recent call last):
  File "/usr/lib/python3.9/threading.py", line 973, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.9/threading.py", line 910, in run
    self._target(*self._args, **self._kwargs)
  File "/home/goameer030/Danker-Man/venv/lib/python3.9/site-packages/django/utils/autoreload.py", line 64, in wrapper
    fn(*args, **kwargs)
  File "/home/goameer030/Danker-Man/venv/lib/python3.9/site-packages/django/core/management/commands/runserver.py", line 110, in inner_run
    autoreload.raise_last_exception()
  File "/home/goameer030/Danker-Man/venv/lib/python3.9/site-packages/django/utils/autoreload.py", line 87, in raise_last_exception
    raise _exception[1]
  File "/home/goameer030/Danker-Man/venv/lib/python3.9/site-packages/django/core/management/__init__.py", line 375, in execute
    autoreload.check_errors(django.setup)()
  File "/home/goameer030/Danker-Man/venv/lib/python3.9/site-packages/django/utils/autoreload.py", line 64, in wrapper
    fn(*args, **kwargs)
  File "/home/goameer030/Danker-Man/venv/lib/python3.9/site-packages/django/__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/home/goameer030/Danker-Man/venv/lib/python3.9/site-packages/django/apps/registry.py", line 114, in populate
    app_config.import_models()
  File "/home/goameer030/Danker-Man/venv/lib/python3.9/site-packages/django/apps/config.py", line 301, in import_models
    self.models_module = import_module(models_module_name)
  File "/usr/lib/python3.9/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 850, in exec_module
  File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
  File "/home/goameer030/Danker-Man/venv/lib/python3.9/site-packages/django_celery_results/models.py", line 7, in <module>
    from celery.five import python_2_unicode_compatible
ImportError: cannot import name 'python_2_unicode_compatible' from 'celery.five' (/home/goameer030/Danker-Man/venv/lib/python3.9/site-packages/celery/five.py)

How to solve this?

2

Other than changing your version of python from 2 to 3, did you also rebuild the virtual environment by reinstalling all third-party packages?