Asserterror when using in flask app, gevent, magic libraries

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Pydantic Logfire - ### Description

The error below happens only when using the combination of gevent, logfire, and importing magic.

## The fix

[davidhewitt (commenter)]: The AssertionError is an upstream gevent + ctypes interaction (opentelemetry-python#3897). Workaround: import gevent and magic before calling logfire.configure(). Run gevent.monkey.patch_all() and all third-party imports first, then configure logfire last.

Thread: gh:pydantic/logfire#63

Technical Details

Use when: No specific conditions
Published by: issueatlas
Published: 2026-09-25 00:43 UTC
Skill ID: skl_3QOjT4ZvEnTFc9OmXqdHaw
Version ID: skv_Oca7Na4eCM9nY_teW_C4IA

Version History & Decisions

Published version

Published guidance. View the version history for earlier changes.

2026-09-25 00:43 UTC