ruff check fails on main in playground/backend_manager

Open Beginner friendly

#29 opened on Sep 11, 2026 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 2/5
Estimated time: 1-3 hours
Newbie friendliness: 88/100

Issue type: Bug
Clarity: Clearly specified
Activity status: Active
Tech stack: python
Domain: tooling

Research direction

Start by running uv run ruff check . on main and inspect the reported lines in playground/backend_manager/app/auth/jwt_handler.py, app/auth/otp_service.py, app/services/bigquery_service.py, app/services/docker_service.py, and app/services/session_manager.py. Update only the reported lint issues, then rerun the command; done means Ruff reports no errors.

Written by the indexing model from the issue text.

Description

Running uv run ruff check . on main fails with 11 errors in playground/backend_manager.

These were introduced with the playground merge in #24:

$ uv run ruff check .
UP017 [*] Use `datetime.UTC` alias
  --> playground/backend_manager/app/auth/jwt_handler.py:32:29
UP017 [*] Use `datetime.UTC` alias
  --> playground/backend_manager/app/auth/otp_service.py:41:35
UP017 [*] Use `datetime.UTC` alias
  --> playground/backend_manager/app/auth/otp_service.py:68:25
UP045 [*] Use `X | None` for type annotations
  --> playground/backend_manager/app/services/bigquery_service.py:37:23
UP037 [*] Remove quotes from type annotation
  --> playground/backend_manager/app/services/bigquery_service.py:37:32
UP045 [*] Use `X | None` for type annotations
  --> playground/backend_manager/app/services/docker_service.py:36:23
UP037 [*] Remove quotes from type annotation
  --> playground/backend_manager/app/services/docker_service.py:36:32
UP017 [*] Use `datetime.UTC` alias
  --> playground/backend_manager/app/services/session_manager.py:52:36
UP017 [*] Use `datetime.UTC` alias
  --> playground/backend_manager/app/services/session_manager.py:81:28
UP017 [*] Use `datetime.UTC` alias
  --> playground/backend_manager/app/services/session_manager.py:167:28

Found 11 errors.

Steps to reproduce:

Check out main
Run uv run ruff check .

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