Mirco-ecommerce build faied with AttributeError: 'EntryPoints' object has no attribute 'get' (Providing for the Community - Not a Question)

[VolodymyrSmahliuk]

Description

I was helping my co-worker to build the ./micro-ecommerce folder with Docker Compose. We tried to run the docker-compose up --build command against it, but the AttributeError: 'EntryPoints' object has no attribute 'get' error occurred. Here is the library where the problem is.

Click to show full error/trace message

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 "/usr/local/lib/python3.7/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line
    utility.execute()
  File "/usr/local/lib/python3.7/site-packages/django/core/management/__init__.py", line 345, in execute
    settings.INSTALLED_APPS
  File "/usr/local/lib/python3.7/site-packages/django/conf/__init__.py", line 76, in __getattr__
    self._setup(name)
  File "/usr/local/lib/python3.7/site-packages/django/conf/__init__.py", line 63, in _setup
    self._wrapped = Settings(settings_module)
  File "/usr/local/lib/python3.7/site-packages/django/conf/__init__.py", line 142, in __init__
    mod = importlib.import_module(self.SETTINGS_MODULE)
  File "/usr/local/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 953, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  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 "/usr/src/app/config/__init__.py", line 1, in <module>
    from .celery import app as celery_app
  File "/usr/src/app/config/celery.py", line 1, in <module>
    from celery import Celery, bootsteps
  File "/usr/local/lib/python3.7/site-packages/celery/bootsteps.py", line 8, in <module>
    from kombu.common import ignore_errors
  File "/usr/local/lib/python3.7/site-packages/kombu/common.py", line 16, in <module>
    from .entity import Exchange, Queue
  File "/usr/local/lib/python3.7/site-packages/kombu/entity.py", line 9, in <module>
    from .serialization import prepare_accept_content
  File "/usr/local/lib/python3.7/site-packages/kombu/serialization.py", line 456, in <module>
    for ep, args in entrypoints('kombu.serializers'):  # pragma: no cover
  File "/usr/local/lib/python3.7/site-packages/kombu/utils/compat.py", line 93, in entrypoints
    for ep in importlib_metadata.entry_points().get(namespace, [])
AttributeError: 'EntryPoints' object has no attribute 'get'

Solution

After the research, we found the main problem (celery/celery#7783 and). The solution was to lock the version of importlib-metadata<5.0 library in the requirements.txt file.