types-s3transfer
Type annotations and code completion for s3transfer
Decision gist · record as of 2026-08-14
Yes, if you use s3transfer and want static type checking. Install as a dev dependency alongside mypy or pyright. Low install friction, permissive MIT license, and zero runtime overhead make it a safe addition. The aging maintenance status (249 days since last release) is a minor concern for a stub package, but the repository is not archived and the package is marked stable.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires mypy or pyright to be installed separately; this package provides stubs only.
- Low install friction; a pure-Python stub package with no runtime dependencies.
- Maintenance is aging—last release was 249 days ago—but the repository remains active and marked Production/Stable.
License · maintenance · safety
MIT (permissive) — MIT license permits unrestricted use, modification, and distribution with minimal restrictions, making it suitable for both open-source and commercial projects.
last release 2025-12-08 (249 days) · last repo commit 2025-12-08 · 2 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 53,999,713 downloads/mo, #547 on PyPI
Alternatives
Verify before relying
pip install types-s3transfer
# Type stubs are automatically discovered by type checkers
# Use with mypy or pyright for type checking s3transfer code- Whether stub coverage is complete for all s3transfer APIs and recent versions.
- How frequently stubs are updated relative to s3transfer releases.
- Whether the 249-day gap since last release indicates stubs are kept current with s3transfer.
What it is and what it does
types-s3transfer is a stub-only package that supplies type annotations for s3transfer, which handles Amazon S3 file transfers. It is part of the mypy_boto3_builder project and works with static type checkers to provide IDE code completion and catch type errors at development time.
The package has no runtime dependencies and is installed purely to improve the development experience. It supports Python 3.9 through 3.14 and follows semantic versioning aligned with the s3transfer package it annotates. Type stubs are automatically discovered by type checkers, so once installed, they work transparently during type checking without requiring explicit imports in your code.
Use it for
- Enable IDE autocomplete and type hints when writing code that uses s3transfer for S3 uploads and downloads.
- Catch type mismatches in s3transfer method calls during development with static type checkers.
- Improve code documentation and maintainability by making s3transfer API contracts explicit.
- Support code review by surfacing type information in editor tooltips and pull requests.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you use s3transfer and want static type checking.
Install as a dev dependency alongside mypy or pyright. Low install friction, permissive MIT license, and zero runtime overhead make it a safe addition. The aging maintenance status (249 days since last release) is a minor concern for a stub package, but the repository is not archived and the package is marked stable.
Install
types-s3transfer on PyPI
Before you install
Low install friction; a pure-Python stub package with no runtime dependencies. Maintenance is aging—last release was 249 days ago—but the repository remains active and marked Production/Stable.
Requires mypy or pyright to be installed separately; this package provides stubs only.
License in practice
MIT license permits unrestricted use, modification, and distribution with minimal restrictions, making it suitable for both open-source and commercial projects.
Quickstart
pip install types-s3transfer
# Type stubs are automatically discovered by type checkers
# Use with mypy or pyright for type checking s3transfer codeVerify before relying
- Whether stub coverage is complete for all s3transfer APIs and recent versions.
- How frequently stubs are updated relative to s3transfer releases.
- Whether the 249-day gap since last release indicates stubs are kept current with s3transfer.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.9 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | None |
| Maintenance | Aging 249 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 53,999,713 / month, #547 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 :: ConsoleNatural 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 :: CPythonTopic :: Software Development :: Libraries :: Python ModulesTyping :: Stubs Only |
Evidence: types_s3transfer-0.16.0-py3-none-any.whl
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See also types-awscrt · types-botocore · botocore-stubs · mypy-boto3 · types-boto3-s3 · types-boto3 · mypy-boto3-sts · mypy-boto3-s3 · types-boto3-full · typing-extensions