Dev: Cannot import name 'flatatt' from 'django.forms.widgets'

[AndrewNatoli]

Hi! 👋 I'm trying to get the development environment set up (and updating the docs in #419 ) and ran into an issue with the celery container.

It looks like pip install is running in the Dockerfile so I wouldn't expect to get an error for a missing dependency... but I'm also not sure / not too familiar with Django. Raising this as an issue to see if you or anyone might have an idea for a quick solution.

intheam-celery-1  | Traceback (most recent call last):
intheam-celery-1  |   File "manage.py", line 23, in <module>
intheam-celery-1  |     execute_from_command_line(sys.argv)
intheam-celery-1  |   File "/usr/local/lib/python3.8/site-packages/django/core/management/__init__.py", line 364, in execute_from_command_line
intheam-celery-1  |     utility.execute()
intheam-celery-1  |   File "/usr/local/lib/python3.8/site-packages/django/core/management/__init__.py", line 338, in execute
intheam-celery-1  |     django.setup()
intheam-celery-1  |   File "/usr/local/lib/python3.8/site-packages/django/__init__.py", line 27, in setup
intheam-celery-1  |     apps.populate(settings.INSTALLED_APPS)
intheam-celery-1  |   File "/usr/local/lib/python3.8/site-packages/django/apps/registry.py", line 85, in populate
intheam-celery-1  |     app_config = AppConfig.create(entry)
intheam-celery-1  |   File "/usr/local/lib/python3.8/site-packages/django/apps/config.py", line 94, in create
intheam-celery-1  |     module = import_module(entry)
intheam-celery-1  |   File "/usr/local/lib/python3.8/importlib/__init__.py", line 127, in import_module
intheam-celery-1  |     return _bootstrap._gcd_import(name[level:], package, level)
intheam-celery-1  |   File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
intheam-celery-1  |   File "<frozen importlib._bootstrap>", line 991, in _find_and_load
intheam-celery-1  |   File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
intheam-celery-1  |   File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
intheam-celery-1  |   File "<frozen importlib._bootstrap_external>", line 783, in exec_module
intheam-celery-1  |   File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
intheam-celery-1  |   File "/usr/local/lib/python3.8/site-packages/django_filters/__init__.py", line 3, in <module>
intheam-celery-1  |     from .filterset import FilterSet
intheam-celery-1  |   File "/usr/local/lib/python3.8/site-packages/django_filters/filterset.py", line 19, in <module>
intheam-celery-1  |     from .filters import (Filter, CharFilter, BooleanFilter, BaseInFilter, BaseRangeFilter,
intheam-celery-1  |   File "/usr/local/lib/python3.8/site-packages/django_filters/filters.py", line 16, in <module>
intheam-celery-1  |     from .fields import (
intheam-celery-1  |   File "/usr/local/lib/python3.8/site-packages/django_filters/fields.py", line 14, in <module>
intheam-celery-1  |     from .widgets import RangeWidget, LookupTypeWidget, CSVWidget
intheam-celery-1  |   File "/usr/local/lib/python3.8/site-packages/django_filters/widgets.py", line 13, in <module>
intheam-celery-1  |     from django.forms.widgets import flatatt
intheam-celery-1  | ImportError: cannot import name 'flatatt' from 'django.forms.widgets' (/usr/local/lib/python3.8/site-packages/django/forms/widgets.py)