async-await support for `requests`.
Brings support for
await syntax to Python's fabulous
- Python 3.6+
$ pip install requests-async
Just use the standard requests API, but use
await for making requests.
ipython to try this from the console, since it supports
import requests_async as requests response = await requests.get('https://example.org') print(response.status_code) print(response.text)
Or use explicit sessions, with an async context manager.
import requests_async as requests async with requests.Session() as session: response = await session.get('https://example.org') print(response.status_code) print(response.text)
requests_async package subclasses
requests, so you're getting all the
standard behavior and API you'd expect.
Streaming responses & requests
iter_lines() methods are async iterators.
response = await requests.get('https://example.org', stream=True) async for chunk in response.iter_content(): ...
The method signatures remain the same as the standard
iter_lines(chunk_size=512, decode_unicode=False, delimiter=None)
The methods will yield text if
decode_unicode is set and the response includes
an encoding. Otherwise the methods will yield bytes.
You can also stream request bodies. To do this you should use an asynchronous generator that yields bytes.
async def stream_body(): ... response = await requests.post('https://example.org', data=stream_body())
In some situations, such as when you're testing a web application, you may not want to make actual outgoing network requests, but would prefer instead to mock out the endpoints.
You can do this using the
ASGISession, which allows you to plug into
any ASGI application, instead of making actual network requests.
import requests_async # Create a mock service, with Starlette, Responder, Quart, FastAPI, Bocadillo, # or any other ASGI web framework. mock_app = ... if TESTING: # Issue requests to the mocked application. requests = requests_async.ASGISession(mock_app) else: # Make live network requests. requests = requests_async.Session()
You can also use
ASGISession as a test client for any ASGI application.
You'll probably want to install
pytest-asyncio, or something
equivalent, to allow you to write
async test cases.
from requests_async import ASGISession from myproject import app import pytest @pytest.mark.asyncio async def test_homepage(): client = ASGISession(app) response = await client.get("/") assert response.status_code == 200
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