False unreachable code

[mmzeynalli]

Environment data

• Language Server version: 2022.1.0
• OS and version: Ubuntu 20.04
• Python version: 3.7.12
• Django version - 2.2

Expected behaviour

While writing tests for Django, I faced some unreachable code segments (which was okay couple days ago). Upon searching for cause, I saw that, new version of PyLance has come yesterday, so I reverted to previous version, and it worked how it is supposed to be.

Version 2012.12.2

Actual behaviour

Version 2022.1.0

Logs

Background analysis message: setFileOpened
Background analysis message: getDiagnosticsForRange
Background analysis message: getDiagnosticsForRange
[FG] parsing: /home/mmzeynalli/Desktop/starex_backend/tests/fulfillment/utils/test_starxpress.py (21ms)
[FG] binding: /home/mmzeynalli/Desktop/starex_backend/tests/fulfillment/utils/test_starxpress.py (6ms)
Background analysis message: getSemanticTokens full
[BG(1)] getSemanticTokens full at /home/mmzeynalli/Desktop/starex_backend/tests/fulfillment/utils/test_starxpress.py ...
[BG(1)]   parsing: /home/mmzeynalli/Desktop/starex_backend/tests/fulfillment/utils/test_starxpress.py (81ms)
[BG(1)]   binding: /home/mmzeynalli/Desktop/starex_backend/tests/fulfillment/utils/test_starxpress.py (6ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/typeshed-fallback/stdlib/datetime.pyi [fs read 0ms] (12ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/typeshed-fallback/stdlib/datetime.pyi (2ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/core/files/base.pyi [fs read 0ms] (3ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/core/files/base.pyi (0ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/core/files/utils.pyi [fs read 1ms] (2ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/core/files/utils.pyi (1ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/urls/__init__.pyi [fs read 0ms] (1ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/urls/__init__.pyi (0ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/urls/base.pyi [fs read 0ms] (2ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/urls/base.pyi (0ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/urls/conf.pyi [fs read 0ms] (0ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/urls/conf.pyi (0ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/urls/resolvers.pyi [fs read 0ms] (8ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/urls/resolvers.pyi (1ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/http/response.pyi [fs read 0ms] (7ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/http/response.pyi (3ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/conf/urls/__init__.pyi [fs read 1ms] (3ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/conf/urls/__init__.pyi (0ms)
[BG(1)]   parsing: /home/mmzeynalli/.local/share/virtualenvs/starex_backend-YtCqeANe/lib/python3.7/site-packages/django_capture_on_commit_callbacks.py [fs read 0ms] (1ms)
[BG(1)]   binding: /home/mmzeynalli/.local/share/virtualenvs/starex_backend-YtCqeANe/lib/python3.7/site-packages/django_capture_on_commit_callbacks.py (0ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/typeshed-fallback/stdlib/contextlib.pyi [fs read 0ms] (3ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/typeshed-fallback/stdlib/contextlib.pyi (2ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/db/utils.pyi [fs read 1ms] (4ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/db/utils.pyi (0ms)
[BG(1)]   parsing: /home/mmzeynalli/.local/share/virtualenvs/starex_backend-YtCqeANe/lib/python3.7/site-packages/rest_framework/permissions.py [fs read 1ms] (12ms)
[BG(1)]   binding: /home/mmzeynalli/.local/share/virtualenvs/starex_backend-YtCqeANe/lib/python3.7/site-packages/rest_framework/permissions.py (3ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/utils/six.pyi [fs read 0ms] (4ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/utils/six.pyi (1ms)
[BG(1)]   parsing: /home/mmzeynalli/.local/share/virtualenvs/starex_backend-YtCqeANe/lib/python3.7/site-packages/rest_framework/test.py [fs read 0ms] (21ms)
[BG(1)]   binding: /home/mmzeynalli/.local/share/virtualenvs/starex_backend-YtCqeANe/lib/python3.7/site-packages/rest_framework/test.py (4ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/test/client.pyi [fs read 0ms] (3ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/test/client.pyi (0ms)
[BG(1)]   parsing: /home/mmzeynalli/Desktop/starex_backend/api/starxpress/views.py [fs read 0ms] (7ms)
[BG(1)]   binding: /home/mmzeynalli/Desktop/starex_backend/api/starxpress/views.py (1ms)
[BG(1)]   parsing: /home/mmzeynalli/.local/share/virtualenvs/starex_backend-YtCqeANe/lib/python3.7/site-packages/rest_framework/__init__.py [fs read 0ms] (1ms)
[BG(1)]   binding: /home/mmzeynalli/.local/share/virtualenvs/starex_backend-YtCqeANe/lib/python3.7/site-packages/rest_framework/__init__.py (1ms)
[BG(1)]   parsing: /home/mmzeynalli/.local/share/virtualenvs/starex_backend-YtCqeANe/lib/python3.7/site-packages/rest_framework/generics.py [fs read 0ms] (5ms)
[BG(1)]   binding: /home/mmzeynalli/.local/share/virtualenvs/starex_backend-YtCqeANe/lib/python3.7/site-packages/rest_framework/generics.py (1ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/utils/decorators.pyi [fs read 0ms] (3ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/utils/decorators.pyi (0ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/views/generic/base.pyi [fs read 0ms] (2ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/views/generic/base.pyi (1ms)
[BG(1)]   parsing: /home/mmzeynalli/Desktop/starex_backend/fulfillment/models/__init__.py [fs read 0ms] (1ms)
[BG(1)]   binding: /home/mmzeynalli/Desktop/starex_backend/fulfillment/models/__init__.py ...
[BG(1)]     parsing: /home/mmzeynalli/Desktop/starex_backend/fulfillment/models/_models.py [fs read 1ms] (91ms)
[BG(1)]     binding: /home/mmzeynalli/Desktop/starex_backend/fulfillment/models/_models.py (15ms)
[BG(1)]     parsing: /home/mmzeynalli/Desktop/starex_backend/fulfillment/models/insurance.py [fs read 0ms] (4ms)
[BG(1)]     binding: /home/mmzeynalli/Desktop/starex_backend/fulfillment/models/insurance.py (2ms)
[BG(1)]     parsing: /home/mmzeynalli/Desktop/starex_backend/fulfillment/models/status.py [fs read 0ms] (8ms)
[BG(1)]     binding: /home/mmzeynalli/Desktop/starex_backend/fulfillment/models/status.py (2ms)
[BG(1)]     parsing: /home/mmzeynalli/Desktop/starex_backend/fulfillment/models/warehouse.py [fs read 0ms] (4ms)
[BG(1)]     binding: /home/mmzeynalli/Desktop/starex_backend/fulfillment/models/warehouse.py (2ms)
[BG(1)]   binding: /home/mmzeynalli/Desktop/starex_backend/fulfillment/models/__init__.py (128ms)
[BG(1)]   parsing: /home/mmzeynalli/Desktop/starex_backend/fulfillment/utils/mixins.py [fs read 0ms] (27ms)
[BG(1)]   binding: /home/mmzeynalli/Desktop/starex_backend/fulfillment/utils/mixins.py (14ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/db/models/deletion.pyi [fs read 0ms] (2ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/db/models/deletion.pyi (4ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/core/validators.pyi [fs read 0ms] (2ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/core/validators.pyi (2ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/db/models/fields/files.pyi [fs read 0ms] (5ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/db/models/fields/files.pyi (3ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/typeshed-fallback/stdlib/pathlib.pyi [fs read 0ms] (4ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/typeshed-fallback/stdlib/pathlib.pyi (4ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/core/files/storage.pyi [fs read 0ms] (1ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/core/files/storage.pyi (0ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/contrib/contenttypes/fields.pyi [fs read 0ms] (3ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/contrib/contenttypes/fields.pyi (1ms)
[BG(1)]   parsing: /home/mmzeynalli/.local/share/virtualenvs/starex_backend-YtCqeANe/lib/python3.7/site-packages/rest_framework/mixins.py [fs read 0ms] (1ms)
[BG(1)]   binding: /home/mmzeynalli/.local/share/virtualenvs/starex_backend-YtCqeANe/lib/python3.7/site-packages/rest_framework/mixins.py (1ms)
[BG(1)]   parsing: /home/mmzeynalli/.local/share/virtualenvs/starex_backend-YtCqeANe/lib/python3.7/site-packages/rest_framework/views.py [fs read 0ms] (9ms)
[BG(1)]   binding: /home/mmzeynalli/.local/share/virtualenvs/starex_backend-YtCqeANe/lib/python3.7/site-packages/rest_framework/views.py (1ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/views/generic/__init__.pyi [fs read 1ms] (1ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/views/generic/__init__.pyi (0ms)
[BG(1)]   parsing: /home/mmzeynalli/Desktop/starex_backend/core/utils/helpers.py [fs read 0ms] (4ms)
[BG(1)]   binding: /home/mmzeynalli/Desktop/starex_backend/core/utils/helpers.py (1ms)
[BG(1)]   parsing: /home/mmzeynalli/Desktop/starex_backend/fulfillment/__init__.py [fs read 0ms] (0ms)
[BG(1)]   binding: /home/mmzeynalli/Desktop/starex_backend/fulfillment/__init__.py (0ms)
[BG(1)]   parsing: /home/mmzeynalli/Desktop/starex_backend/fulfillment/utils/querysets.py [fs read 1ms] (1ms)
[BG(1)]   binding: /home/mmzeynalli/Desktop/starex_backend/fulfillment/utils/querysets.py (0ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/views/decorators/debug.pyi [fs read 0ms] (0ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/views/decorators/debug.pyi (0ms)
[BG(1)]   parsing: /home/mmzeynalli/Desktop/starex_backend/fulfillment/utils/starxpress.py [fs read 1ms] (21ms)
[BG(1)]   binding: /home/mmzeynalli/Desktop/starex_backend/fulfillment/utils/starxpress.py (10ms)
[BG(1)]   parsing: /home/mmzeynalli/Desktop/starex_backend/tests/core/factories.py [fs read 0ms] (3ms)
[BG(1)]   binding: /home/mmzeynalli/Desktop/starex_backend/tests/core/factories.py (1ms)
[BG(1)]   parsing: /home/mmzeynalli/Desktop/starex_backend/tests/fulfillment/factories.py [fs read 1ms] (2ms)
[BG(1)]   binding: /home/mmzeynalli/Desktop/starex_backend/tests/fulfillment/factories.py (1ms)
[BG(1)]   parsing: /home/mmzeynalli/.local/share/virtualenvs/starex_backend-YtCqeANe/lib/python3.7/site-packages/factory/faker.py [fs read 0ms] (2ms)
[BG(1)]   binding: /home/mmzeynalli/.local/share/virtualenvs/starex_backend-YtCqeANe/lib/python3.7/site-packages/factory/faker.py (1ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/core/cache/__init__.pyi [fs read 0ms] (0ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/core/cache/__init__.pyi (0ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/utils/timezone.pyi [fs read 0ms] (2ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/utils/timezone.pyi (0ms)
[BG(1)]   parsing: /home/mmzeynalli/Desktop/starex_backend/core/models/__init__.py [fs read 0ms] (0ms)
[BG(1)]   binding: /home/mmzeynalli/Desktop/starex_backend/core/models/__init__.py ...
[BG(1)]     parsing: /home/mmzeynalli/Desktop/starex_backend/core/models/_models.py [fs read 0ms] (25ms)
[BG(1)]     binding: /home/mmzeynalli/Desktop/starex_backend/core/models/_models.py (9ms)
[BG(1)]     parsing: /home/mmzeynalli/Desktop/starex_backend/core/models/notification.py [fs read 0ms] (8ms)
[BG(1)]     binding: /home/mmzeynalli/Desktop/starex_backend/core/models/notification.py (3ms)
[BG(1)]   binding: /home/mmzeynalli/Desktop/starex_backend/core/models/__init__.py (46ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/typeshed-fallback/stubs/requests/requests/__init__.pyi [fs read 0ms] (1ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/typeshed-fallback/stubs/requests/requests/__init__.pyi (0ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/typeshed-fallback/stubs/requests/requests/api.pyi [fs read 1ms] (3ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/typeshed-fallback/stubs/requests/requests/api.pyi (1ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/typeshed-fallback/stubs/requests/requests/sessions.pyi [fs read 0ms] (2ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/typeshed-fallback/stubs/requests/requests/sessions.pyi (1ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/typeshed-fallback/stubs/requests/requests/models.pyi [fs read 0ms] (1ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/typeshed-fallback/stubs/requests/requests/models.pyi (1ms)
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[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/views/decorators/csrf.pyi [fs read 0ms] (1ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/views/decorators/csrf.pyi (0ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/utils/encoding.pyi [fs read 1ms] (1ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/utils/encoding.pyi (1ms)
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[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/utils/http.pyi (0ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/core/handlers/wsgi.pyi [fs read 0ms] (1ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/core/handlers/wsgi.pyi (1ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/http/__init__.pyi [fs read 0ms] (1ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/http/__init__.pyi (0ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/http/request.pyi [fs read 0ms] (3ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/http/request.pyi (3ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/typeshed-fallback/stdlib/io.pyi [fs read 0ms] (1ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/typeshed-fallback/stdlib/io.pyi (2ms)
[BG(1)]   parsing: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/contrib/auth/base_user.pyi [fs read 1ms] (1ms)
[BG(1)]   binding: /home/mmzeynalli/.vscode/extensions/ms-python.vscode-pylance-2022.1.0/dist/bundled/stubs/django/contrib/auth/base_user.pyi (1ms)
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Code Snippet / Additional information

class TransactionDataGetSetTestCase(StarexTestCase):
    def setUp(self):
        super().setUp()

        self.transaction1: Transaction = pf.TransactionFactory(data=None)
        self.transaction2: Transaction = pf.TransactionFactory(data=dict())
        self.transaction3: Transaction = pf.TransactionFactory(data={"data_key": None})
        self.transaction4: Transaction = pf.TransactionFactory(
            data={"data_key": "data_value"}
        )
        self.transaction5: Transaction = pf.TransactionFactory(data=None)

[erictraut]

Thanks for the bug report, but we'll need more context. Could you please provide a minimal, self-contained sample (including any required import statements)? In particular, where are the symbols Transaction, StarexTestCase and pf defined?

[Rildlanster]

Same here. Since v2022.1.0 I've got many incorrect unreachable code in my Django tests. It didn't happen in non-test code so far. In my case, all the unreachable code are shown after any FactoryBoy model instantiation.

On v2021.12.2 the same code is shown as expected:

[erictraut]

@Rildlanster, as I mentioned to the OP, we'll need more context. Could you provide a self-contained, minimal example in code form? The code within the screen shots you've pasted includes symbols that are defined outside of the sample, and I don't know where these are coming from.

[Rildlanster]

Hello @erictraut, here is a minimal project I've created:

• Create a new folder pylancetest and install virtualenv on it: python3.9.exe -m venv .venv

• Install Django and factory-boy dependencies: .\.venv\Scripts\python.exe -m pip install django factory-boy
• Activate virtualenv and create a Django project: & .venv/Scripts/Activate.ps1, django-admin.exe startproject test .

• Create a file test.py

• Copy and paste the test.py content given bellow:

from factory.django import DjangoModelFactory
from django.contrib.auth.models import User
from django.test import TestCase


class UserFactory(DjangoModelFactory):
    class Meta:
        model = User


class StaffUserTest(TestCase):
    def test_pylance(self):
        UserFactory()
        print("Is it unreachable?")

You will see the unreachable code in the print statement:

• Run the test and see the Is it unreachable? printed in terminal: .\.venv\Scripts\python.exe .\manage.py test

[erictraut]

Thanks for the repro steps. I was able to find and fix the underlying cause.

The UserFactory class derives from factory.base.Factory. This class derives from factory.base.BaseFactory, which defines a __new__ method that always raises an exception. That's why pylance thought the code afterward was unreachable. However, factory.base.BaseFactory is also using a custom metaclass that defines a __call__ method. This is invoked instead of the __new__ method in this case.

This will be fixed in the next release of pylance.

[bschnurr]

This issue has been fixed in version 2022.1.1, which we've just released. You can find the changelog here: CHANGELOG.md