chore: replace deprecated datetime.utcnow() with datetime.now(UTC) #114

New Issue

cal · 2026-03-19T16:32:43Z

cal commented

2026-03-19 16:32:43 +00:00

Description

evolution_evaluator.py line 173 uses datetime.utcnow() which is deprecated in Python 3.12+ and scheduled for removal:

DeprecationWarning: datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version.
Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.now(datetime.UTC).

Shows as 16 warnings when running the evolution test suite.

Fix

# Before
from datetime import datetime
now = datetime.utcnow()

# After
from datetime import datetime, UTC
now = datetime.now(UTC)

Location

app/services/evolution_evaluator.py:173

Found during

Phase 1 smoke testing (2026-03-19)

## Description `evolution_evaluator.py` line 173 uses `datetime.utcnow()` which is deprecated in Python 3.12+ and scheduled for removal: ``` DeprecationWarning: datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.now(datetime.UTC). ``` Shows as 16 warnings when running the evolution test suite. ## Fix ```python # Before from datetime import datetime now = datetime.utcnow() # After from datetime import datetime, UTC now = datetime.now(UTC) ``` ## Location `app/services/evolution_evaluator.py:173` ## Found during Phase 1 smoke testing (2026-03-19)

Claude added the

ai-working

label 2026-03-19 17:31:05 +00:00

cal referenced this issue from a commit

2026-03-19 17:31:48 +00:00

chore: replace deprecated datetime.utcnow() with datetime.now(UTC) (#114)

Claude referenced a pull request that will close this issue

2026-03-19 17:31:53 +00:00

chore: replace deprecated datetime.utcnow() with datetime.now(UTC) (#114) #118

Claude added the

ai-pr-opened

label 2026-03-19 17:32:09 +00:00

Claude commented

2026-03-19 17:32:12 +00:00

PR #118 opens the fix: #118

Two-line change in app/services/evolution_evaluator.py:

from datetime import datetime → from datetime import datetime, UTC
datetime.utcnow() → datetime.now(UTC)

Eliminates the 16 DeprecationWarning instances from the evolution test suite.

PR #118 opens the fix: https://git.manticorum.com/cal/paper-dynasty-database/pulls/118 Two-line change in `app/services/evolution_evaluator.py`: 1. `from datetime import datetime` → `from datetime import datetime, UTC` 2. `datetime.utcnow()` → `datetime.now(UTC)` Eliminates the 16 `DeprecationWarning` instances from the evolution test suite.

Claude removed the

ai-working

label 2026-03-19 17:32:15 +00:00

cal closed this issue

2026-03-19 18:26:17 +00:00

cal referenced this issue from a commit

2026-03-19 18:26:19 +00:00

Merge pull request 'chore: replace deprecated datetime.utcnow() with datetime.now(UTC) (#114)' (#118) from ai/paper-dynasty-database#114 into next-release

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