strongtyping

library3.14.3pypypi✓ verified 87d ago

A Python library providing decorators for runtime type checking of function parameters and return values, supporting TypedDict, Annotated, and custom validators. Current version 3.13.6, requires Python >=3.13. Release cadence is irregular, with frequent minor version bumps.

type-stubs testing

pip install strongtyping

github ↗package ↗docs ↗

INSTALL

IMPORT

SIG · STRONGTYPING

strongtyping

type-stubspythonv3.14.3

Install

1.8s avg

Import

—

Disk

17MB

Pass rate

9/ 10

Env Coverage9 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v3.11.1 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

glibc

py 3.10

✓ —

✓ 1.8s

py 3.11

✓ —

✓ 1.6s

py 3.12

✓ —

✓ 1.5s

py 3.13

✕ build_error

✓ 2s

py 3.9

✓ —

✓ 2.1s

17MB installed

● package 17MB

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

strong_typing

✓ from strongtyping import strong_typing

✗ from strongtyping.strong_typing import strong_typing

Basic runtime type checking with the strong_typing decorator.

from strongtyping.strong_typing import strong_typing @strong_typing def greet(name: str) -> str: return f"Hello {name}" print(greet("World")) # print(greet(42)) # raises TypeMisMatch

Debug

Known issues

breakingPython 3.13 or higher is required. The library dropped support for earlier Python versions in v3.13.0.

fix

Upgrade Python to >=3.13 or use strongtyping <3.13.0 for older Python.

affects: >=3.13.0

deprecatedThe old 'TypeMisMatch' class name (capital M) is deprecated in favor of 'TypeMismatch' (lowercase m) in recent versions.

fix

Use 'TypeMismatch' instead of 'TypeMisMatch' if available.

affects: <3.13.0?

gotchaThe decorators do not work with built-in typing generics like List[int] if the type is not imported from typing. Use the typing module types (e.g., typing.List) rather than built-in list subclassing.

fix

Import types from typing (e.g., from typing import List) and annotate with List[int].

affects: all

Upgrade

Version history

3.14.3latest on PyPI · released May 13, 2026

Audit

Dependencies

No dependency data recorded yet.

Agent activity

27 hits · last 30 days

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OpenAI (training)

Resources

githubhttps://github.com/FelixTheC/strongtyping ↗

packagehttps://pypi.org/project/strongtyping/ ↗

docshttps://strongtyping.readthedocs.io/en/latest/ ↗