Comment corriger SQLAlchemy Can't load plugin: sqlalchemy.dialects:cockroachdb

Problème

En utilisant SQLAlchemy pour se connecter à CockroachDB, en utilisant une URL de base de données telle que cockroachdb+psycopg2://root@localhost:26257/defaultdb vous rencontrez l’erreur suivante :

sqlalchemy_cockroachdb_error.txt

 File "/home/uli/.local/lib/python3.12/site-packages/sqlalchemy/util/deprecations.py", line 281, in warned
    return fn(*args, **kwargs)  # type: ignore[no-any-return]
           ^^^^^^^^^^^^^^^^^^^
  File "/home/uli/.local/lib/python3.12/site-packages/sqlalchemy/engine/create.py", line 550, in create_engine
    entrypoint = u._get_entrypoint()
                 ^^^^^^^^^^^^^^^^^^^
  File "/home/uli/.local/lib/python3.12/site-packages/sqlalchemy/engine/url.py", line 758, in _get_entrypoint
    cls = registry.load(name)
          ^^^^^^^^^^^^^^^^^^^
  File "/home/uli/.local/lib/python3.12/site-packages/sqlalchemy/util/langhelpers.py", line 375, in load
    raise exc.NoSuchModuleError(
sqlalchemy.exc.NoSuchModuleError: Can't load plugin: sqlalchemy.dialects:cockroachdb

 File "/home/uli/.local/lib/python3.12/site-packages/sqlalchemy/util/deprecations.py", line 281, in warned
    return fn(*args, **kwargs)  # type: ignore[no-any-return]
           ^^^^^^^^^^^^^^^^^^^
  File "/home/uli/.local/lib/python3.12/site-packages/sqlalchemy/engine/create.py", line 550, in create_engine
    entrypoint = u._get_entrypoint()
                 ^^^^^^^^^^^^^^^^^^^
  File "/home/uli/.local/lib/python3.12/site-packages/sqlalchemy/engine/url.py", line 758, in _get_entrypoint
    cls = registry.load(name)
          ^^^^^^^^^^^^^^^^^^^
  File "/home/uli/.local/lib/python3.12/site-packages/sqlalchemy/util/langhelpers.py", line 375, in load
    raise exc.NoSuchModuleError(
sqlalchemy.exc.NoSuchModuleError: Can't load plugin: sqlalchemy.dialects:cockroachdb

Solution

Vous n’avez pas installé le paquet sqlalchemy-cockroachdb.

Pour corriger cela, exécutez :

install_sqlalchemy_cockroachdb.sh

pip install sqlalchemy-cockroachdb

pip install sqlalchemy-cockroachdb

et ajoutez-le aussi à votre fichier requirements.txt si vous en avez un.