Issue with pydantic in local installation

[ltoniazzi]

How to reproduce the problem

Following the steps for a local installation in the "Install with pip" section in a virtualenv, when running doccano task I get the error

pydantic.errors.PydanticImportError: `pydantic:ConstrainedStr` has been removed in V2

Click here for full error trace

(.doccanovenv) ➜  project: doccano task
/user/project/.doccanovenv/lib/python3.9/site-packages/pydantic/_internal/_config.py:261: UserWarning: Valid config keys have changed in V2:
* 'schema_extra' has been renamed to 'json_schema_extra'
  warnings.warn(message, UserWarning)
[2023-07-19 12:35:54 +0000] [9403] [INFO] [django_drf_filepond.apps::ready::61] App init: no django-storages backend configured, using default (local) storage backend if set, otherwise you need to manage file storage independently of this app.
Starting task queue.
[2023-07-19 12:35:57 +0000] [9403] [ERROR] [celery.utils.dispatch.signal::send::280] Signal handler <bound method DjangoFixup.on_import_modules of <celery.fixups.django.DjangoFixup object at 0x10411df40>> raised: PydanticImportError('`pydantic:ConstrainedStr` has been removed in V2.')
Traceback (most recent call last):
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/celery/utils/dispatch/signal.py", line 276, in send
    response = receiver(signal=self, sender=sender, **named)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/celery/fixups/django.py", line 97, in on_import_modules
    self.worker_fixup.validate_models()
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/celery/fixups/django.py", line 137, in validate_models
    run_checks()
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/django/core/checks/registry.py", line 88, in run_checks
    new_errors = check(app_configs=app_configs, databases=databases)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/django/core/checks/urls.py", line 14, in check_url_config
    return check_resolver(resolver)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/django/core/checks/urls.py", line 24, in check_resolver
    return check_method()
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/django/urls/resolvers.py", line 494, in check
    for pattern in self.url_patterns:
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/django/utils/functional.py", line 57, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/django/urls/resolvers.py", line 715, in url_patterns
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/django/utils/functional.py", line 57, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/django/urls/resolvers.py", line 708, in urlconf_module
    return import_module(self.urlconf_name)
  File "/opt/homebrew/Cellar/python@3.9/3.9.16/Frameworks/Python.framework/Versions/3.9/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 "/user/project/.doccanovenv/lib/python3.9/site-packages/backend/config/urls.py", line 59, in <module>
    path("v1/", include("data_import.urls")),
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/django/urls/conf.py", line 38, in include
    urlconf_module = import_module(urlconf_module)
  File "/opt/homebrew/Cellar/python@3.9/3.9.16/Frameworks/Python.framework/Versions/3.9/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 "/user/project/.doccanovenv/lib/python3.9/site-packages/backend/data_import/urls.py", line 3, in <module>
    from .views import DatasetCatalog, DatasetImportAPI
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/backend/data_import/views.py", line 7, in <module>
    from .celery_tasks import import_dataset
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/backend/data_import/celery_tasks.py", line 11, in <module>
    from .datasets import load_dataset
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/backend/data_import/datasets.py", line 12, in <module>
    from .pipeline.label import CategoryLabel, Label, RelationLabel, SpanLabel, TextLabel
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/backend/data_import/pipeline/label.py", line 5, in <module>
    from pydantic import UUID4, BaseModel, ConstrainedStr, NonNegativeInt, root_validator
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/pydantic/__init__.py", line 207, in __getattr__
    return _getattr_migration(attr_name)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/pydantic/_migration.py", line 294, in wrapper
    raise PydanticImportError(f'`{import_path}` has been removed in V2.')
pydantic.errors.PydanticImportError: `pydantic:ConstrainedStr` has been removed in V2.

For further information visit https://errors.pydantic.dev/2.0.3/u/import-error
Traceback (most recent call last):
  File "/user/project/.doccanovenv/bin/doccano", line 8, in <module>
    sys.exit(main())
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/backend/cli.py", line 177, in main
    args.handler(args)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/backend/cli.py", line 110, in command_run_task_queue
    app.worker_main(argv=argv)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/celery/app/base.py", line 388, in worker_main
    self.start(argv=argv)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/celery/app/base.py", line 368, in start
    celery.main(args=argv, standalone_mode=False)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/click/core.py", line 1078, in main
    rv = self.invoke(ctx)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/click/core.py", line 1688, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/click/core.py", line 1434, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/click/core.py", line 783, in invoke
    return __callback(*args, **kwargs)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/click/decorators.py", line 33, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/celery/bin/base.py", line 134, in caller
    return f(ctx, *args, **kwargs)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/celery/bin/worker.py", line 348, in worker
    worker = app.Worker(
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/celery/worker/worker.py", line 93, in __init__
    self.app.loader.init_worker()
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/celery/loaders/base.py", line 110, in init_worker
    self.import_default_modules()
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/celery/loaders/base.py", line 104, in import_default_modules
    raise response
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/celery/utils/dispatch/signal.py", line 276, in send
    response = receiver(signal=self, sender=sender, **named)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/celery/fixups/django.py", line 97, in on_import_modules
    self.worker_fixup.validate_models()
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/celery/fixups/django.py", line 137, in validate_models
    run_checks()
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/django/core/checks/registry.py", line 88, in run_checks
    new_errors = check(app_configs=app_configs, databases=databases)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/django/core/checks/urls.py", line 14, in check_url_config
    return check_resolver(resolver)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/django/core/checks/urls.py", line 24, in check_resolver
    return check_method()
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/django/urls/resolvers.py", line 494, in check
    for pattern in self.url_patterns:
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/django/utils/functional.py", line 57, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/django/urls/resolvers.py", line 715, in url_patterns
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/django/utils/functional.py", line 57, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/django/urls/resolvers.py", line 708, in urlconf_module
    return import_module(self.urlconf_name)
  File "/opt/homebrew/Cellar/python@3.9/3.9.16/Frameworks/Python.framework/Versions/3.9/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 "/user/project/.doccanovenv/lib/python3.9/site-packages/backend/config/urls.py", line 59, in <module>
    path("v1/", include("data_import.urls")),
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/django/urls/conf.py", line 38, in include
    urlconf_module = import_module(urlconf_module)
  File "/opt/homebrew/Cellar/python@3.9/3.9.16/Frameworks/Python.framework/Versions/3.9/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 "/user/project/.doccanovenv/lib/python3.9/site-packages/backend/data_import/urls.py", line 3, in <module>
    from .views import DatasetCatalog, DatasetImportAPI
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/backend/data_import/views.py", line 7, in <module>
    from .celery_tasks import import_dataset
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/backend/data_import/celery_tasks.py", line 11, in <module>
    from .datasets import load_dataset
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/backend/data_import/datasets.py", line 12, in <module>
    from .pipeline.label import CategoryLabel, Label, RelationLabel, SpanLabel, TextLabel
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/backend/data_import/pipeline/label.py", line 5, in <module>
    from pydantic import UUID4, BaseModel, ConstrainedStr, NonNegativeInt, root_validator
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/pydantic/__init__.py", line 207, in __getattr__
    return _getattr_migration(attr_name)
  File "/user/project/.doccanovenv/lib/python3.9/site-packages/pydantic/_migration.py", line 294, in wrapper
    raise PydanticImportError(f'`{import_path}` has been removed in V2.')
pydantic.errors.PydanticImportError: `pydantic:ConstrainedStr` has been removed in V2.

Fix

I managed to run doccano by running pip install pydantic==1.9 after running pip install doccano in the steps from the docs.

Your Environment

• Operating System: MacOs 13.0.1
• Python Version Used: 3.9.16
• When you install doccano: 19Jul2023 10PM UTC
• How did you install doccano (Heroku button etc): Install with pip with virtualenv locally

[Hironsan]

Thanks. I can reproduce the problem.