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Remove python3.15 preview warning and bump version to 4.2.3 #236

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anzheyazzz merged 2 commits into from
Oct 27, 2026
Merged

Remove python3.15 preview warning and bump version to 4.2.3 #236

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bc29023
chore: Remove python3.15 from preview runtime envs
anzheyazzz Oct 27, 2026
b4de044
chore: Bump version to 4.2.3
anzheyazzz Oct 27, 2026
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4 changes: 4 additions & 0 deletions RELEASE.CHANGELOG.md
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@@ -1,3 +1,7 @@
### October 27, 2026
`4.2.3`
- Remove `AWS_Lambda_python3.15` from the preview runtime list so the preview warning is no longer emitted on Python 3.15 ([#236](https://github.com/aws/aws-lambda-python-runtime-interface-client/pull/236)).

### October 15, 2026
`4.2.2`
- Pin the worker process start method to `fork` in multi-concurrent (Lambda Managed Instances) mode instead of inheriting the interpreter default, which changed from `fork` to `forkserver` in Python 3.14. Workers are now direct children of the runtime process on every supported Python version ([#233](https://github.com/aws/aws-lambda-python-runtime-interface-client/pull/233)). No behavior change on Python 3.13 and earlier; no impact on the standard on-demand path.
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2 changes: 1 addition & 1 deletion awslambdaric/__init__.py
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Copyright 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
"""

__version__ = "4.2.2"
__version__ = "4.2.3"
2 changes: 1 addition & 1 deletion awslambdaric/bootstrap.py
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Expand Up @@ -478,7 +478,7 @@ def _setup_logging(log_format, log_level, log_sink):
logger.addHandler(logger_handler)


PREVIEW_RUNTIME_ENVS = {"AWS_Lambda_python3.15"}
PREVIEW_RUNTIME_ENVS = set()


def _log_preview_runtime_warning():
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