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Find and Fix Flaky pytest Tests

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Self-Hosting & Infra intermediate 7 min read $0.01 Updated 2026-10-19

Diagnosing flaky pytest tests: reproduction with pytest-randomly, pytest-repeat and xdist, shared global and database state, fixtures scope, time and randomness, network calls, async races, resource cleanup and quarantine policy.

Tests pass locally and fail in CI, or fail one run in ten. Reproduce with random order and repeats, then fix shared state, time, ordering, concurrency and external dependencies.

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#pytest#testing#flaky-tests#python#ci

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