psycopg2 is required for ArrayField even if project isn't using postgres

[AngelOnFira]

Even though I'm not using Postgres for Django (just yet), the use of ArrayFields requires me to have it installed.

Traceback (most recent call last):
  File "/home/forest/Documents/git/megagame-controller/django/manage.py", line 22, in <module>
    main()
  File "/home/forest/Documents/git/megagame-controller/django/manage.py", line 18, in main
    execute_from_command_line(sys.argv)
  File "/home/forest/.cache/pypoetry/virtualenvs/backend-6PFENasO-py3.9/lib/python3.9/site-packages/django/core/management/__init__.py", line 419, in execute_from_command_line
    utility.execute()
  File "/home/forest/.cache/pypoetry/virtualenvs/backend-6PFENasO-py3.9/lib/python3.9/site-packages/django/core/management/__init__.py", line 413, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/forest/.cache/pypoetry/virtualenvs/backend-6PFENasO-py3.9/lib/python3.9/site-packages/django/core/management/base.py", line 354, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/forest/.cache/pypoetry/virtualenvs/backend-6PFENasO-py3.9/lib/python3.9/site-packages/django/core/management/base.py", line 398, in execute
    output = self.handle(*args, **options)
  File "/home/forest/Documents/git/megagame-controller/django/player/management/commands/seed.py", line 27, in handle
    seeder = Seed.seeder(locale="en_CA")
  File "/home/forest/.cache/pypoetry/virtualenvs/backend-6PFENasO-py3.9/lib/python3.9/site-packages/django_seed/__init__.py", line 43, in seeder
    from django_seed import seeder
  File "/home/forest/.cache/pypoetry/virtualenvs/backend-6PFENasO-py3.9/lib/python3.9/site-packages/django_seed/seeder.py", line 6, in <module>
    from django_seed.guessers import NameGuesser, FieldTypeGuesser
  File "/home/forest/.cache/pypoetry/virtualenvs/backend-6PFENasO-py3.9/lib/python3.9/site-packages/django_seed/guessers.py", line 5, in <module>
    from django.contrib.postgres.fields import ArrayField
  File "/home/forest/.cache/pypoetry/virtualenvs/backend-6PFENasO-py3.9/lib/python3.9/site-packages/django/contrib/postgres/fields/__init__.py", line 1, in <module>
    from .array import *  # NOQA
  File "/home/forest/.cache/pypoetry/virtualenvs/backend-6PFENasO-py3.9/lib/python3.9/site-packages/django/contrib/postgres/fields/array.py", line 3, in <module>
    from django.contrib.postgres import lookups
  File "/home/forest/.cache/pypoetry/virtualenvs/backend-6PFENasO-py3.9/lib/python3.9/site-packages/django/contrib/postgres/lookups.py", line 4, in <module>
    from .search import SearchVector, SearchVectorExact, SearchVectorField
  File "/home/forest/.cache/pypoetry/virtualenvs/backend-6PFENasO-py3.9/lib/python3.9/site-packages/django/contrib/postgres/search.py", line 1, in <module>
    import psycopg2
ModuleNotFoundError: No module named 'psycopg2'

[N1K1TAS95]

pip install psycopg2-binary inside your venv

[Vftdan]

Possible solution:

https://github.com/Brobin/django-seed/blob/077398a2c2a533b07517b121b34713a2e43bcc63/django_seed/guessers.py#L11

try:
    from django.contrib.postgres.fields import ArrayField
except ImportError:
    ArrayField = None

https://github.com/Brobin/django-seed/blob/077398a2c2a533b07517b121b34713a2e43bcc63/django_seed/guessers.py#L129

        if ArrayField is not None and isinstance(field, ArrayField):

And the same thing for JSONField.

[EliasOPrado]

Installing psycopg2-binaryworked for me.