Python SDK

9.15.1 (2026-04-10)

Bug Fixes

• Improve fallback behavior when using custom data system configuration (#407) (60272b2)

---

This PR was generated with Release Please. See documentation.

<!-- CURSOR_SUMMARY -->

9.15.0 (2026-02-10)

Features

• Drop support for python 3.9 (#393) (5b761bd)
• Update ChangeSet to always require a Selector (#405) (5dc4f81)

Bug Fixes

• Add context manager for clearer, safer locks (#396) (beca0fa)
• Address potential race condition in FeatureStore update_availability (#391) (31cf487)
• Allow modifying fdv2 data source options independent of main config (#403) (d78079e)
• Mark copy_with_new_sdk_key method as deprecated (#353) (e471ccc)
• Prevent immediate polling on recoverable error (#399) (da565a2)
• Redis store is considered initialized when $inited key is written (e99a27d)
• Stop FeatureStoreClientWrapper poller on close (#397) (468afdf)
• Update DataSystemConfig to accept list of synchronizers (#404) (c73ad14)
• Update reason documentation with inExperiment value (#401) (cbfc3dd)
• Update Redis to write missing $inited key (e99a27d)

---

This PR was generated with Release Please. See documentation.

<!-- CURSOR_SUMMARY -->

9.14.1 (2025-12-15)

Bug Fixes

• Remove all synchronizers in daemon mode (#388) (441a5ec)

---

This PR was generated with Release Please. See documentation.

<!-- CURSOR_SUMMARY -->

9.14.0 (2025-12-04)

Features

• adding data system option to create file datasource intializer (e5b121f)
• adding file data source as an intializer (#381) (3700d1d)

Bug Fixes

• Add warning if relying on Redis max_connections parameter (#387) (e6395fa), closes #386
• modified initializer behavior to spec (064f65c)

---

This PR was generated with Release Please. See documentation.

<!-- CURSOR_SUMMARY -->

9.13.1 (2025-11-19)

Bug Fixes

• Include ldclient.datasystem in docs (#379) (318c6fe)

---

This PR was generated with Release Please. See documentation.

<!-- CURSOR_SUMMARY -->

9.13.0 (2025-11-19)

Features

• experimental: Release EAP support for FDv2 data system (#376) (0e7c32b)

---

This PR was generated with Release Please. See documentation.

<!-- CURSOR_SUMMARY -->

9.12.3 (2025-10-30)

Bug Fixes

• Fix overly generic type hint on File data source (#365) (52a7499), closes #364

---

This PR was generated with Release Please. See documentation.

<!-- CURSOR_SUMMARY -->

9.12.2 (2025-10-27)

Bug Fixes

• Fix incorrect event count in failure message (#359) (91f4163)

---

This PR was generated with Release Please. See documentation.

<!-- CURSOR_SUMMARY -->

9.12.1 (2025-09-30)

Bug Fixes

• Add validation format check for SDK key (#351)

---

This PR was generated with Release Please. See documentation.

<!-- CURSOR_SUMMARY -->

9.12.0 (2025-07-11)

⚠ BREAKING CHANGES

• Drop support for Python 3.8 (eol 2024-10-07) (#339)

Features

• Add support for plugins. (#337) (241f6f4)
• Drop support for Python 3.8 (eol 2024-10-07) (#339) (0207665)

9.11.1 (2025-05-29)

Bug Fixes

• Raise minimum eventsource dep to v1.2.4 (#333) (5270962)

9.11.0 (2025-04-08)

Features

• Add postfork method to re-initialize after forking (#329) (581fcfb)

9.10.0 (2025-03-13)

Features

• Inline context for custom and migration op events (#327) (ecfd56c)

9.9.0 (2025-01-03)

Features

• Add support for payload filtering (#323) (1115afb)

9.8.1 (2024-12-23)

Bug Fixes

• Close SSE thread on shutdown (#320) (2210658)

9.8.0 (2024-10-16)

Features

• Add support for client-side prerequisite events (#314) (3025af4)

9.7.2 (2024-10-01)

Bug Fixes

• Set explicit names for each spawned thread (#311) (9c7777c)
• Shutdown diagnostic thread if enabled (#312) (cde6cfb)

9.7.1 (2024-08-26)

Bug Fixes

• Skip empty hosts when processing NO_PROXY variable (#309) (82d8117)

9.7.0 (2024-08-20)

Features

• Add option to omit anonymous users from index and identify events (#306) (8f13ffe)

9.6.0 (2024-08-19)

Features

• NO_PROXY environment variable can be used to override HTTP(S)_PROXY values (#301) (d0913ee)