sqlalchemy2-stubs
Typing Stubs for SQLAlchemy 1.4
Decision gist · record as of 2026-08-14
Yes, if you are actively maintaining SQLAlchemy 1.4 code and want static type checking. The low install friction and permissive MIT license make it straightforward to add. However, this is a legacy package: it is dormant, explicitly incompatible with SQLAlchemy 2.0, and must be manually uninstalled before upgrading. Do not install if you are on or planning to migrate to SQLAlchemy 2.0.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Only compatible with SQLAlchemy 1.4; must be manually uninstalled before upgrading to SQLAlchemy 2.0, which includes inline typing and will conflict with these stubs.
- Low install friction with a single lightweight dependency on typing-extensions.
- Maintenance is dormant—last commit was 2023-12-30 and no releases in 958 days—which is expected for a legacy typing stub package.
License · maintenance · safety
MIT (permissive) — MIT license permits permissive use, modification, and distribution with minimal restrictions, making it safe to adopt in most projects.
last release 2023-12-30 (958 days) · last repo commit 2023-12-30 · 157 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 2,580,257 downloads/mo, #2,990 on PyPI
Alternatives
Verify before relying
pip install sqlalchemy2-stubs typing-extensions
from typing_extensions import TypedDict
# Use with SQLAlchemy 1.4 ORM code for type checking- Whether the stubs cover the full SQLAlchemy 1.4 API surface or only a subset (description notes 'interim' and 'alpha level').
- Current compatibility with modern type checker versions and whether the accompanying mypy plugin is still maintained.
- Practical compatibility with PyPy, given the classifier lists it as supported.
What it is and what it does
sqlalchemy2-stubs provides typing stub files (PEP-484) for SQLAlchemy 1.4, allowing static type checkers to understand SQLAlchemy's ORM API and catch type errors at development time. The stubs are designed to work alongside a mypy extension plugin, which adds special handling for ORM mapped classes.
This package is explicitly a bridge for SQLAlchemy 1.4 users and is not compatible with SQLAlchemy 2.0, which ships with inline type annotations. The project is in alpha status and dormant—released concurrently with SQLAlchemy 1.4 and no longer actively maintained. Users upgrading to SQLAlchemy 2.0 must manually uninstall these stubs to avoid conflicts with the library's native typing.
Use it for
- Enable type checking on SQLAlchemy 1.4 ORM code to catch column access and relationship errors before runtime.
- Provide IDE autocomplete and type hints for SQLAlchemy models and query objects in editors supporting PEP-484 stubs.
- Validate type consistency in legacy SQLAlchemy 1.4 projects during migration planning or refactoring.
- Support gradual typing adoption in existing SQLAlchemy 1.4 codebases without rewriting the library itself.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you are actively maintaining SQLAlchemy 1.4 code and want static type checking.
The low install friction and permissive MIT license make it straightforward to add. However, this is a legacy package: it is dormant, explicitly incompatible with SQLAlchemy 2.0, and must be manually uninstalled before upgrading. Do not install if you are on or planning to migrate to SQLAlchemy 2.0.
Install
sqlalchemy2-stubs on PyPI
Before you install
Low install friction with a single lightweight dependency on typing-extensions. Maintenance is dormant—last commit was 2023-12-30 and no releases in 958 days—which is expected for a legacy typing stub package.
Only compatible with SQLAlchemy 1.4; must be manually uninstalled before upgrading to SQLAlchemy 2.0, which includes inline typing and will conflict with these stubs.
License in practice
MIT license permits permissive use, modification, and distribution with minimal restrictions, making it safe to adopt in most projects.
Quickstart
pip install sqlalchemy2-stubs typing-extensions
from typing_extensions import TypedDict
# Use with SQLAlchemy 1.4 ORM code for type checkingVerify before relying
- Whether the stubs cover the full SQLAlchemy 1.4 API surface or only a subset (description notes 'interim' and 'alpha level').
- Current compatibility with modern type checker versions and whether the accompanying mypy plugin is still maintained.
- Practical compatibility with PyPy, given the classifier lists it as supported.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.6 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 1 packagetyping-extensions |
| Maintenance | Dormant 958 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 2,580,257 / month, #2,990 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 3 - AlphaIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseOperating System :: OS IndependentProgramming Language :: Python :: 3Programming Language :: Python :: 3.6Programming Language :: Python :: 3.7Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9Programming Language :: Python :: Implementation :: CPythonProgramming Language :: Python :: Implementation :: PyPy |
Evidence: sqlalchemy2_stubs-0.0.2a38-py3-none-any.whl
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See also homeassistant-stubs · sqlalchemy-stubs · types-SQLAlchemy · django-filter-stubs · djangorestframework-stubs · types-Flask-SQLAlchemy · lxml-stubs · SQLAlchemy · sqlalchemy-mixins · sqlalchemy-firebird