---
id: mypy-boto3-fsx
version: "1.43.0"
license: MIT
license_treatment: permissive
maintenance: active
---

# mypy-boto3-fsx — Type annotations for boto3 FSx 1.43.0 service generated with mypy-boto3-builder 8.12.0

License: permissive · Maintenance: active · Downloads: 259.8K/mo

## What it is and what it does

This package is a type stub library that adds static type checking and IDE autocomplete to boto3's FSx (File System) service. It was generated from boto3 1.43.0 using mypy-boto3-builder 8.12.0 and works with mypy, pyright, VSCode Pylance, PyCharm, Emacs, Sublime Text, and other IDE language servers.

When installed, it enables your editor and type checker to understand boto3 FSx client methods, paginators, and type definitions without requiring explicit annotations in your code. It has a single runtime dependency on typing-extensions and supports Python 3.9 through 3.14. The package is designed as a stub-only library (no runtime code), so it can be safely imported only during type checking if needed to avoid production dependencies.

Use it for:

- Enable mypy or pyright type checking on boto3 FSx code to catch type errors before runtime.
- Get IDE autocomplete and parameter hints when writing FSx client calls in VSCode, PyCharm, or Emacs.
- Annotate FSxClient and paginator types explicitly in functions that interact with AWS FSx.
- Use boto3-stubs[fsx] as a lighter alternative to full boto3-stubs when PyCharm performance is a concern.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Provides type annotations and IDE autocomplete support for the boto3 FSx service, enabling static type checking with mypy, pyright, and compatible tools.

Yes, if you use boto3 for FSx and want static type checking or IDE support. Install friction is minimal, maintenance is active, and the MIT license poses no restrictions. Consider the lite variant (boto3-stubs-lite[fsx]) if PyCharm performance becomes an issue. No known vulnerabilities.

## Install

pip install mypy-boto3-fsx
uv add mypy-boto3-fsx
poetry add mypy-boto3-fsx

## Installing mypy-boto3-fsx

Before you install: Low friction install with a single runtime dependency (typing-extensions). Actively maintained with recent releases; last commit 2026-06-22. Stable status and 670 repository stars indicate reliable ongoing support.

License in practice: MIT license permits unrestricted use, modification, and distribution in both open-source and commercial projects with minimal restrictions.

Quickstart:

pip install mypy-boto3-fsx

from boto3.session import Session
from mypy_boto3_fsx import FSxClient

client: FSxClient = Session().client("fsx")

Requires Python 3.9 or later; boto3 must be installed separately in your environment.

Verify before relying:

- Performance impact on PyCharm when using full boto3-stubs (documentation warns of potential slowness with Literal overloads).
- Whether the lite variant (boto3-stubs-lite) provides equivalent type coverage for most common FSx operations.

## Package facts

- License: MIT (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 259.8K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

boto3 type stubs, aws fsx type annotations, mypy boto3 support, ide autocomplete aws, static type checking boto3, pyright boto3 stubs, fsx client type hints, type-stubs, aws-sdk, static-typing

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