Sourced from aws-lambda-powertools's releases.

v3.20.0

Summary

In this release we are excited to announce the new build recipes documentation for Powertools for AWS Lambda Python, which explains how to handle Rust and C bindings libraries, GLIBC compatibility, cross-platform builds, and architecture-specific dependencies.

We also improved the Parser utility models by adding detailed descriptions and examples illustrating AWS Lambda event structures.

⭐️ Congrats to @​dcabib, @​sreejaaryahi18, @​Liam-DeVoe and @​shrivarshapoojari for contributing to this project for the first time!

The build recipes documentation

Docs

The Python ecosystem is evolving with more Rust and C bindings for better performance, introducing new Lambda deployment challenges like GLIBC compatibility and cross-platform builds.

We've published updated Powertools build recipes that cover:

• Build tools: pip, Poetry, SAM, CDK, Pants
• Cross-platform deployment for macOS/Windows → Linux Lambda
• GLIBC compatibility across Amazon Linux runtime versions
• Troubleshooting common issues
• Performance tips to reduce cold starts and package size
• CI/CD examples with GitHub Actions and CodeBuild

Changes

• refactor(event_handler): allow to pass dict as argument to exception classes (#7341) by @​shrivarshapoojari
• refactor(parser): improves S3 models with examples and descriptions (#7292) by @​ivica-k
• refactor(parser): Improve Transfer Family models with examples and descriptions (#7294) by @​dcabib
• refactor(parser): Improve Kafka models with examples and descriptions (#7293) by @​dcabib
• refactor(parser): Improve SQS models with examples and descriptions (#7286) by @​dcabib
• refactor(parser): Improve SNS models with examples and descriptions (#7287) by @​dcabib
• refactor(parser): Improve VPC Lattice with examples and descriptions (#7234) by @​anafalcao
• refactor(parser): Improve DynamoDB models with examples and descriptions (#7146) by @​sreejaaryahi18

🌟New features and non-breaking changes

• feat(parser): add support for sourceIp with ipv6 and port (#7351) by @​leandrodamascena
• feat(parser): add support for sourceIp with port (#7315) by @​leandrodamascena

📜 Documentation updates

• docs(index): remove customer names (#7318) by @​leandrodamascena
• docs: fix SSM recursive parameter highlighting (#7316) by @​dcabib
• docs: Add AWS copyright footer. (#7313) by @​phipag
• docs: Add installation snippet for uv package manager (#7272) by @​ConnorKirk

... (truncated)

Sourced from aws-lambda-powertools's changelog.

[v3.20.0] - 2025-09-09

Code Refactoring

• event_handler: allow to pass dict as argument to exception classes (#7341)
• parser: improves S3 models with examples and descriptions (#7292)
• parser: Improve Transfer Family models with examples and descriptions (#7294)
• parser: Improve Kafka models with examples and descriptions (#7293)
• parser: Improve SQS models with examples and descriptions (#7286)
• parser: Improve SNS models with examples and descriptions (#7287)
• parser: Improve VPC Lattice with examples and descriptions (#7234)
• parser: Improve DynamoDB models with examples and descriptions (#7146)

Documentation

• fix SSM recursive parameter highlighting (#7316)
• Add AWS copyright footer. (#7313)
• Add installation snippet for uv package manager (#7272)
• Fix copy to clipboard button (#7270)
• build_recipes: add troubleshooting page (#7195)
• build_recipes: add cicd page (#7176)
• build_recipes: add initial build recipes structure (#7163)
• build_recipes: add build tools page (#7201)
• build_recipes: add cross build page (#7199)
• build_recipes: add performance optimization page (#7197)
• index: remove customer names (#7318)
• mkdocs: fix docs warnings (#7211)
• public_reference: add QuasiScience as a public reference (#7228)

Features

• parser: add support for sourceIp with ipv6 and port (#7351)
• parser: add support for sourceIp with port (#7315)

Maintenance

• version bump
• automation: update PR template to include closes command (#7173)
• ci: new pre-release 3.19.1a11 (#7278)
• ci: new pre-release 3.19.1a0 (#7161)
• ci: new pre-release 3.19.1a16 (#7350)
• ci: new pre-release 3.19.1a1 (#7172)
• ci: new pre-release 3.19.1a2 (#7192)
• ci: new pre-release 3.19.1a3 (#7207)
• ci: new pre-release 3.19.1a4 (#7217)
• ci: new pre-release 3.19.1a6 (#7232)
• ci: new pre-release 3.19.1a7 (#7244)
• ci: new pre-release 3.19.1a14 (#7306)
• ci: new pre-release 3.19.1a5 (#7226)
• ci: new pre-release 3.19.1a8 (#7247)
• ci: new pre-release 3.19.1a9 (#7256)

... (truncated)

• 87e8f62 chore: version bump
• 1c05061 chore(deps): bump codecov/codecov-action from 5.5.0 to 5.5.1 (#7345)
• b42d7cc chore(deps): bump squidfunk/mkdocs-material from 1a4e939 to 209b62d in /d...
• 118a3e8 feat(parser): add support for sourceIp with ipv6 and port (#7351)
• f93d3cc chore(deps): bump mkdocs-material from 9.6.18 to 9.6.19 (#7346)
• 0eb5cb8 chore(deps-dev): bump boto3-stubs from 1.40.25 to 1.40.26 (#7348)
• 682e051 chore(deps-dev): bump pytest-cov from 6.2.1 to 6.3.0 (#7349)
• e36b138 chore(ci): new pre-release 3.19.1a16 (#7350)
• 14c0aa8 chore(ci): changelog rebuild (#7340)
• a186759 refactor(event_handler): allow to pass dict as argument to exception classes ...
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