Registry / async-exit-stack

async-exit-stack

library1.0.1pypypi✓ verified 85d ago

A backport of AsyncExitStack from Python 3.7+ for use on Python 3.5 and 3.6. It provides an async context manager that can combine multiple async context managers and cleanup callbacks. Current version 1.0.1, release cadence is low (last release in 2018).

pip install async-exit-stack

github ↗package ↗

INSTALL

IMPORT

SIG · ASYNC-EXIT-STACK

async-exit-stack

pythonv1.0.1

Install

1.6s avg

Import

—

Disk

16MB

Pass rate

10/ 10

Env Coverage10 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v1.0.1 · 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

py 3.10–3.95 runs

installs and imports cleanly · install 0.0s · import 0.000s · 17.8MB

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 1.6s · import 0.000s · 18MB

16MB installed

● package 16MB

Code

Verified usage

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

AsyncExitStack

✓ from async_exit_stack import AsyncExitStack

✗ from async_exit_stack.async_exit_stack import AsyncExitStack

Common mistake: trying to import from a submodule. The package's top-level __init__.py re-exports AsyncExitStack.

Minimal example using AsyncExitStack to enter an async context manager and push a callback.

import asyncio from async_exit_stack import AsyncExitStack async def main(): async with AsyncExitStack() as stack: # enter an async context manager result = await stack.enter_async_context(some_async_context()) # push a callback stack.push_async_callback(lambda: asyncio.sleep(0)) print('Inside stack') print('Exited stack') async def some_async_context(): class FakeAsyncCM: async def __aenter__(self): return self async def __aexit__(self, *args): pass return FakeAsyncCM() asyncio.run(main())

Debug

Known issues

deprecatedThis library is a backport for Python <3.7. Python 3.5 and 3.6 are end-of-life. Use Python 3.7+'s built-in contextlib.AsyncExitStack instead.

fix

Upgrade to Python 3.7+ and use `from contextlib import AsyncExitStack`. Remove dependency on async-exit-stack.

affects: all versions

gotchaThe package is named `async-exit-stack` on PyPI, but the import module is `async_exit_stack` (underscore). Confusing these leads to ImportError.

fix

Import as `from async_exit_stack import AsyncExitStack`.

affects: all versions

gotchaAsyncExitStack.enter_context (sync) is not available; use enter_async_context. Attempting to use enter_context will raise AttributeError.

fix

Use `await stack.enter_async_context(cm)` instead of `stack.enter_context(cm)`.

affects: all versions

Errors

Common errors & fixes

ModuleNotFoundError: No module named 'async_exit_stack'

Package not installed or wrong import name (confused with hyphen name).

fix

Run `pip install async-exit-stack` and then use `from async_exit_stack import AsyncExitStack`.

AttributeError: module 'async_exit_stack' has no attribute 'AsyncExitStack'

Imported the module but did not import the class correctly, e.g., `import async_exit_stack` then `async_exit_stack.AsyncExitStack` when the class is not in the module's top-level? Actually it is. More likely: installed a different package or shadowed by a local file.

fix

Ensure you have the correct package installed and no local file named async_exit_stack.py. Uninstall and reinstall: `pip uninstall async-exit-stack` and `pip install async-exit-stack`.

TypeError: object AsyncExitStack can't be used in 'await' expression

Trying to await AsyncExitStack() directly. AsyncExitStack is an async context manager, not a coroutine.

fix

Use `async with AsyncExitStack() as stack:` not `await AsyncExitStack()`.

Upgrade

Version history

1.0.1latest on PyPI · released May 7, 2018

Audit

Dependencies

No dependency data recorded yet.

Agent activity

2 hits · last 30 days

node

Resources

githubhttps://github.com/sorcio/async_exit_stack ↗

packagehttps://pypi.org/project/async-exit-stack/ ↗