mypy-boto3-efs

What it is and what it does

mypy-boto3-efs is a type stub package that adds static type annotations for the boto3 EFS (Elastic File System) service. It is generated from boto3 1.43.23 and enables IDEs and type checkers to understand the shape and behavior of EFS client methods, paginators, and data structures without requiring explicit type annotations in your code.

The package works by providing type information that IDEs and tools like mypy and pyright use to offer code completion, catch type errors, and validate method calls. It supports multiple development environments—VSCode with Pylance, PyCharm, Emacs with lsp-pyright, Sublime Text, and command-line type checkers. Installation is straightforward and low-friction; the package depends only on typing-extensions and installs as a pure Python wheel.

Use it for:

• Enable IDE autocompletion and type hints when writing boto3 EFS client code in VSCode or PyCharm.
• Run mypy or pyright type checking on boto3 EFS code to catch method signature and argument type errors before runtime.
• Provide explicit type annotations for EFS client, paginators, and data structures in team codebases using TYPE_CHECKING guards.
• Support linting and type validation in Emacs or Sublime Text with LSP-based Python language servers.
• Validate boto3 EFS API calls during CI/CD pipelines using mypy or pyright without runtime dependencies.

Worth the install?

AI-flagged interpretation of the facts on this page — verify before relying

Provides type stubs and IDE autocompletion for the boto3 EFS service, enabling static type checking with mypy, pyright, and IDE support in VSCode, PyCharm, Emacs, and Sublime Text.

Yes, if you use boto3 EFS and want static type checking or IDE autocompletion. Install friction is negligible, maintenance is active, and the MIT license poses no restrictions. The package is a pure stub with no runtime side effects. Consider the lite variant (boto3-stubs-lite) if PyCharm performance becomes an issue.

Install

mypy-boto3-efs on PyPI

pip install mypy-boto3-efs

uv add mypy-boto3-efs

poetry add mypy-boto3-efs

Installing mypy-boto3-efs

Before you install

Low friction: pure Python wheel with a single runtime dependency (typing-extensions). Actively maintained as of 2026-06-22 with 670 repository stars and a stable release cadence.

License in practice

MIT license permits unrestricted use, modification, and distribution in both open-source and proprietary projects with minimal obligations.

Quickstart

# Install
python -m pip install mypy-boto3-efs

# Use in code
from boto3.session import Session
from mypy_boto3_efs import EFSClient

client: EFSClient = Session().client("efs")
# Type checking and IDE completion now work

Requires Python 3.9 or later; boto3 must be installed separately to use the client.

Verify before relying

• Whether the package is suitable for production use beyond type checking (stubs-only nature may limit runtime functionality).
• Performance impact in PyCharm due to known Literal overload performance issues mentioned in the description.

Package facts

Evidence: mypy_boto3_efs-1.43.23-py3-none-any.whl

Keywords: boto3, efs, boto3-stubs, type-annotations, mypy, typeshed, autocomplete

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