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Python-valve is a Python library which intends to provide an all-in-one interface to various Valve products and services, including:

• Source servers
  • A2S server queries
  • RCON
• Source master server
• Steam web API
• Local Steam Clients
• Valve Data Format/KeyValues (.vdf)

To get started, install Python-valve with pip: pip install python-valve.

This project is no longer actively maintained. The server query part has been rewritten and is available as python-a2s to not break compatibility with projects using the old API.

In this example we connect to a Source server's remote console and issue a simple echo command to it.

import valve.rcon

server_address = ("...", 27015)
password = "top_secret"

with valve.rcon.RCON(server_address, password) as rcon:
    print(rcon("echo Hello, world!"))

In this example we demonstrate the Source master server and A2S query implementations by listing all Team Fortress 2 servers in Europe and Asia running the map ctf_2fort, along with the players on each server sorted by their score.

import valve.source
import valve.source.a2s
import valve.source.master_server

with valve.source.master_server.MasterServerQuerier() as msq:
    try:
        for address in msq.find(region=[u"eu", u"as"],
                                gamedir=u"tf",
                                map=u"ctf_2fort"):
            try:
                with valve.source.a2s.ServerQuerier(address) as server:
                    info = server.info()
                    players = server.players()

            except valve.source.NoResponseError:
                print("Server {}:{} timed out!".format(*address))
                continue

            print("{player_count}/{max_players} {server_name}".format(**info))
            for player in sorted(players["players"],
                                 key=lambda p: p["score"], reverse=True):
                print("{score} {name}".format(**player))

    except valve.source.NoResponseError:
        print("Master server request timed out!")

Python-valve uses Semantic Versioning. At this time, Python-valve is yet to reach its 1.0 release. Hence, every minor version should be considered to potentially contain breaking changes. Hence, when specifying Python-valve as a requirement, either in setup.py or requirements.txt, it's advised to to pin the specific minor version. E.g. python-valve==0.2.0.

Python-valve uses Pytest for running its test suite. Unit test coverage is always improving. There are also functional tests included which run against real Source servers.

If working on Python-valve use the following to install the test dependencies and run the tests:

pip install -e .[test]
py.test tests/ --cov valve/

Documentation is written using Sphinx and is hosted on Read the Docs.

If working on Python-valve use the following to install the documentation dependencies, build the docs and then open them in a browser.

pip install -e .[docs]
(cd docs/ && make html)
xdg-open docs/_build/html/index.html

Python-valve supports Python 2.7! However, it's important to bear in mind that Python 2.7 will not be maintained past 2020. Python-valve may drop support for Python 2.7 in a future major release before 2020 in order to make use of new, non-backwards compatible Python 3 features.

It's strongly encouraged that new Python-valve projects use Python 3.

Valve, the Valve logo, Half-Life, the Half-Life logo, the Lambda logo, Steam, the Steam logo, Team Fortress, the Team Fortress logo, Opposing Force, Day of Defeat, the Day of Defeat logo, Counter-Strike, the Counter-Strike logo, Source, the Source logo, Counter-Strike: Condition Zero, Portal, the Portal logo, Dota, the Dota 2 logo, and Defense of the Ancients are trademarks and/or registered trademarks of Valve Corporation.

Any reference to these are purely for the purpose of identification. Valve Corporation is not affiliated with Python-valve or any Python-valve contributors in any way.