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aioredis-py is currently designed to be a full asyncio-native port of redis-py. As such, our main focus is to keep in lockstep with feature and bug development on the part of the redis-py library. As a rule of thumb:

  1. If the issue is with connection management, it should be routed here.
  2. If the issue is with an implementation of high-level clients (commands, pipelining, locking, etc.) it should be routed to redis-py

Getting Started

To start contributing you must read all the following.

First you must fork/clone repo from github:

$ git clone

Next, you should install all python dependencies, it is as easy as running single command:

$ make devel

this command will install:

  • mkdocs for building documentation;
  • pytest for running tests;
  • flake8 and black for code linting;
  • and few other packages.

Make sure you have provided a towncrier note. Just add short description running following commands:

$ echo "Short description" > CHANGES/filename.type

This will create new file in CHANGES directory. Filename should consist of the ticket ID or other unique identifier. Five default types are:

  • .feature - signifying new feature
  • .bugfix - signifying a bug fix
  • .doc - documentation improvement
  • .removal - deprecation or removal of public API
  • .misc - a ticket has been closed, but not in interest of users

You can check if everything is correct by typing:

$ towncrier --draft

To produce the news file:

$ towncrier


Starting with v2.0, aioredis is a running, asyncio-native port of redis-py. When submitting a change, if we find it is the result of an issue with the source implementation, then we may redirect your change to that library to be triaged and merged there first.

In general, updates to the high-level Redis client will likely be re-routed via redis-py, while changes to the lower-level connection client will likely be accepted directly.

Code style

Code must be pep8 compliant.

You can check it with following command:

$ make lint

Running tests

You can run tests in any of the following ways:

# first install aioredis (must use -e for tests to work)
$ pip install -e .

# will run tests in a verbose mode
$ make test
# or
$ pytest

# or with particular Redis server
$ pytest --redis-url=redis://localhost:6379/2 tests/

# will run tests with coverage report
$ make cov
# or
$ pytest --cov

Different Redis server versions

To run tests against different Redis versions, you must have them installed on your host machine and running. Then you can pass an explicit url to the tests with --redis-url:

$ pytest --redis-url=redis://localhost:6379/2


To run tests with uvloop:

$ pip install uvloop
$ pytest --uvloop

Writing tests

aioredis uses pytest.

Tests are located under /tests directory.

Redis Version Tests Helpers

In tests.conftest there are @skip_if_server_version_* decorators which will automatically skip tests if the server version doesn’t meet the required version specification. If you’re adding support for a new feature of Redis, then this is a good tool to use.