aiopenapi3

library0.10.0pypypi✓ verified 84d ago

Async client and validator for OpenAPI 3.0, 3.1, 3.2, and Swagger 2.0 specifications. Current version 0.10.0, requires Python >=3.10. Active development with frequent releases.

http-networking serialization

pip install aiopenapi3

github ↗package ↗docs ↗

INSTALL

IMPORT

SIG · AIOPENAPI3

aiopenapi3

http-networkingpythonv0.10.0

Install

5.6s avg

Import

2468ms

Disk

40MB

Pass rate

10/ 10

Env Coverage10 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v0.10.0 · 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

py 3.10–3.95 runs

installs and imports cleanly · install 0.0s · import 2.578s · 40.2MB

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 5.6s · import 2.358s · 41MB

40MB installed

● package 40MB

Code

Verified usage

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

OpenAPI

✓ from aiopenapi3 import OpenAPI

✗ from openapi3 import OpenAPI

Correct package is 'aiopenapi3', not 'openapi3'.

load_file

✓ from aiopenapi3 import load_file

✗ from aiopenapi3.loaders import load_file

load_file is exposed at top level since v0.9.0.

Load an OpenAPI spec and call an endpoint asynchronously.

import os from aiopenapi3 import OpenAPI # Load spec from URL api = OpenAPI( url="https://petstore3.swagger.io/api/v3/openapi.json", auth=lambda r: r.with_headers({"api_key": os.environ.get("API_KEY", "")}) ) # Call an operation (e.g., list pets) pets = api.list_pets(limit=10) print(pets)

Debug

Known issues

breakingIn v0.8.0, the client now raises exceptions for HTTP error status codes (4xx, 5xx) instead of returning error responses. Code that previously checked response status must be updated.

fix

Wrap API calls in try/except or handle aiopenapi3.exceptions.APIError.

affects: >=0.8.0

breakingIn v0.6.0, model access changed: RootModel wrappers were removed, so model attributes are accessed directly without .root.

fix

Replace any model.root.attribute with model.attribute.

affects: >=0.6.0

gotchaThe library requires Python >=3.10. Installing on Python 3.9 or older will fail with a version incompatibility.

fix

Upgrade Python to 3.10+ or use aiopenapi3 <0.9.0 (though it may have fewer features/security updates).

affects: >=0.9.0

deprecatedSupport for Python 3.9 was dropped in v0.9.0; Python 3.8 was dropped in v0.8.0.

fix

Use Python 3.10 or later.

affects: >=0.9.0

Errors

Common errors & fixes

ModuleNotFoundError: No module named 'aiopenapi3'

The package 'aiopenapi3' is not installed or install target is wrong.

fix

Run: pip install aiopenapi3

AttributeError: module 'aiopenapi3' has no attribute 'load_file'

load_file is not a top-level symbol in older versions (<0.9.0).

fix

Upgrade to aiopenapi3 >=0.9.0 or import from aiopenapi3.loaders.load_file.

aiopenapi3.exceptions.APIError: 404 Not Found

The API returned a non-2xx status, which now raises an exception by default since v0.8.0.

fix

Catch APIError or configure the client to suppress raising on errors.

Upgrade

Version history

0.10.0latest on PyPI · released May 1, 2026

Audit

Dependencies

httpxrequiredHTTP client for async requests

pydanticrequiredData validation and settings management

pyyamlrequiredParse YAML OpenAPI specs

Agent activity

42 hits · last 30 days

node

OpenAI (training)

Resources

githubhttps://github.com/commonism/aiopenapi3 ↗

packagehttps://pypi.org/project/aiopenapi3/ ↗

docshttps://aiopenapi3.readthedocs.io/ ↗