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asyncio-cancel-token: Task cancellation pattern for asyncio applications

Project description

# asyncio-cancel-token

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Task cancellation pattern for asyncio applications.

Read more in the [documentation on ReadTheDocs]( [View the change log](

## Quickstart

`sh pip install asyncio-cancel-token `

## Developer Setup

If you would like to hack on asyncio-cancel-token, please check out the [Ethereum Development Tactical Manual]( for information on how we do:

  • Testing
  • Pull Requests
  • Code Style
  • Documentation

### Development Environment Setup

You can set up your dev environment with:

`sh git clone cd asyncio-cancel-token virtualenv -p python3 venv . venv/bin/activate pip install -e .[dev] `

### Testing Setup

During development, you might like to have tests run on every file save.

Show flake8 errors on file change:

`sh # Test flake8 when-changed -v -s -r -1 cancel_token/ tests/ -c "clear; flake8 cancel_token tests && echo 'flake8 success' || echo 'error'" `

Run multi-process tests in one command, but without color:

`sh # in the project root: pytest --numprocesses=4 --looponfail --maxfail=1 # the same thing, succinctly: pytest -n 4 -f --maxfail=1 `

Run in one thread, with color and desktop notifications:

`sh cd venv ptw --onfail "notify-send -t 5000 'Test failure ⚠⚠⚠⚠⚠' 'python 3 test on asyncio-cancel-token failed'" ../tests ../cancel_token `

### Release setup

For Debian-like systems: ` apt install pandoc `

To release a new version:

`sh make release bump=$$VERSION_PART_TO_BUMP$$ `

#### How to bumpversion

The version format for this repo is {major}.{minor}.{patch} for stable, and {major}.{minor}.{patch}-{stage}.{devnum} for unstable (stage can be alpha or beta).

To issue the next version in line, specify which part to bump, like make release bump=minor or make release bump=devnum.

If you are in a beta version, make release bump=stage will switch to a stable.

To issue an unstable version when the current version is stable, specify the new version explicitly, like make release bump=”–new-version 4.0.0-alpha.1 devnum”

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