slack is a Python package that provides interface to Slack.
Install via pip
$ pip install pyslack
Install from source:
$ git clone git://github.com/kn/slack.git
$ cd slack
$ python setup.py install
You need to get your Slack token from api.slack.com.
> import slack
> import slack.chat
> slack.api_token = 'your_token'
> slack.chat.post_message('#eng', 'Hello slackers!', username='mybot')
> import slack.users
> slack.users.list()
All methods in a preview release of Slack API are available.