mypy-boto3-lambda
Type annotations for boto3 Lambda 1.43.60 service generated with mypy-boto3-builder 8.12.0
Decision gist · record as of 2026-08-14
Yes. This is a low-friction, actively maintained stub package with no security vulnerabilities, permissive MIT licensing, and broad IDE support. Install it if you use boto3 for Lambda and want static type checking or IDE autocompletion; it adds minimal overhead and can be safely guarded as a development-only import.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.9 or later; type checking tools (mypy, pyright, or IDE language server) must be separately installed and configured.
- Low friction install with a single lightweight runtime dependency (typing-extensions).
- Active maintenance with recent release 15 days ago and ongoing repository activity.
License · maintenance · safety
MIT (permissive) — MIT license permits unrestricted use, modification, and distribution in both open-source and proprietary projects with minimal restrictions.
last release 2026-07-30 (15 days) · last repo commit 2026-06-22 · 670 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 11,024,586 downloads/mo, #1,420 on PyPI
Alternatives
Verify before relying
pip install mypy-boto3-lambda
from boto3.session import Session
from mypy_boto3_lambda import LambdaClient
client: LambdaClient = Session().client("lambda")- Whether the package works correctly with all listed IDE integrations (VSCode, PyCharm, Emacs, Sublime Text) in practice.
- Performance impact on PyCharm reported in documentation (issue PY-40997) and whether boto3-stubs-lite is necessary for typical projects.
What it is and what it does
This package is a stub-only type annotation library for AWS Lambda operations via boto3. It contains no runtime code—only type definitions that enable static type checkers and IDEs to understand boto3's Lambda API surface, providing code completion and catching type errors before runtime.
The package is generated automatically from boto3 1.43.60 using mypy-boto3-builder 8.12.0 and supports multiple type-checking workflows: inline with mypy or pyright, through IDE language servers (Pylance in VSCode, Pyright in Sublime/Emacs), or as a development-only dependency guarded by TYPE_CHECKING. It depends only on typing-extensions and is compatible with Python 3.9 through 3.14.
Use it for
- Enable IDE autocomplete and type checking for boto3 Lambda client calls in VSCode or PyCharm without writing manual type hints.
- Catch Lambda API usage errors (wrong parameter names, incorrect types) during development with mypy or pyright before deployment.
- Provide type hints for paginators, waiters, and service resources when working with Lambda through boto3.
- Use as a development-only dependency (via TYPE_CHECKING guard) to avoid runtime overhead in production code.
- Support multiple editor workflows (Emacs, Sublime Text, other LSP-compatible IDEs) with a single installed package.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
This is a low-friction, actively maintained stub package with no security vulnerabilities, permissive MIT licensing, and broad IDE support. Install it if you use boto3 for Lambda and want static type checking or IDE autocompletion; it adds minimal overhead and can be safely guarded as a development-only import.
Install
mypy-boto3-lambda on PyPI
Before you install
Low friction install with a single lightweight runtime dependency (typing-extensions). Active maintenance with recent release 15 days ago and ongoing repository activity.
Requires Python 3.9 or later; type checking tools (mypy, pyright, or IDE language server) must be separately installed and configured.
License in practice
MIT license permits unrestricted use, modification, and distribution in both open-source and proprietary projects with minimal restrictions.
Quickstart
pip install mypy-boto3-lambda
from boto3.session import Session
from mypy_boto3_lambda import LambdaClient
client: LambdaClient = Session().client("lambda")Verify before relying
- Whether the package works correctly with all listed IDE integrations (VSCode, PyCharm, Emacs, Sublime Text) in practice.
- Performance impact on PyCharm reported in documentation (issue PY-40997) and whether boto3-stubs-lite is necessary for typical projects.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.9 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 1 packagetyping-extensions |
| Maintenance | Actively maintained 15 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 11,024,586 / month, #1,420 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableEnvironment :: ConsoleIntended Audience :: DevelopersNatural Language :: EnglishOperating System :: OS IndependentProgramming Language :: Python :: 3Programming Language :: Python :: 3 :: OnlyProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Programming Language :: Python :: 3.9Programming Language :: Python :: Implementation :: CPythonTyping :: Stubs Only |
Evidence: mypy_boto3_lambda-1.43.60-py3-none-any.whl
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See also types-boto3-lambda · mypy-boto3-ec2 · mypy-boto3-cloudformation · mypy-boto3-iot · mypy-boto3-neptune · mypy-boto3-s3 · mypy-boto3-dynamodb · mypy-boto3-connect · mypy-boto3-config · boto3-stubs-lite