async-tail

Asynchronous tailing library written in Rust.

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Python wrapper around Rust linemux library, which uses the notify cross-platform filesystem notification library.

Uses PyO3 Rust bindings and PyO3-asyncio to manage Rust/Python event loops lifecycles.

Installation

async-tail requires Python 3.7 - 3.11.

pip install async-tail

Binaries are available for:

• Linux: x86_64, aarch64, i686, armv7l, musl-x86_64, musl-aarch64, ppc64le & s390x
• MacOS: x86_64 & arm64 (except python 3.7)
• Windows: To be done

Otherwise, you can install from source which requires Rust stable to be installed.

Usage

Here are some examples of what async-tail can do:

tail Usage

from async_tail import tail

for line in tail('./path/to/file.log', './path/to/file_2.log'):
    print(line)

atail Usage

import asyncio
from async_tail import atail

async def main():
    async for line in atail('/path/to/file.txt', '/path/to/file_2.txt'):
        print(line)

asyncio.run(main())

Notes

async-tail is a way for me to learn Rust and experiment Rust bindings from Python. It is inspired from the great Samuel COLVIN's work on watchfiles, which provides a Python wrapper around Rust notify crate. This is still under development. More things will come:

• Write tests
• Setup proper CI
• Build wheels for Windows
• Build and expose docs
• Provide benchmarks