Skip to main content

Memoize asyncio Python function calls

Project description

aiomemoize CircleCI Test Coverage

Memoize asyncio Python calls. Invalidation is manual/explicit for each set of arguments, although exceptions raised are not cached. This can be used for coroutines, and functions that return a promise.

Installation

pip install aiomemoize

Usage

For a coroutine whose arguments are hashable, you can create a memoized version by passing it to memoize. This returns a tuple of the memoized function, and a function to invalidate the cache on a per-item basis.

For example, the below

import asyncio
from aiomemoize import memoize

async def main():
    memoized, invalidate = memoize(coro)
    results = await asyncio.gather(*[
        memoized('a'),
        memoized('a'),
        memoized('b'),
    ])
    print(results)

    invalidate('a')
    results = await asyncio.gather(*[
        memoized('a'),
        memoized('a'),
        memoized('b'),
    ])
    print(results)

    await memoized('a')

async def coro(value):
    print('Inside coro', value)
    await asyncio.sleep(1)
    return value

loop = asyncio.get_event_loop()
loop.run_until_complete(main())
loop.close()

will output

Inside coro a
Inside coro b
['a', 'a', 'b']
Inside coro a
['a', 'a', 'b']

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

aiomemoize-0.0.3.tar.gz (2.0 kB view hashes)

Uploaded Source

Built Distribution

aiomemoize-0.0.3-py3-none-any.whl (3.0 kB view hashes)

Uploaded Python 3

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page