Slack provides an official python client module which you can easily work with.
It’s simple and easy to use. For example, sending a text line to a specific channel is simple enough to call through just one API – api_call(“chat.postMessage“, channel=channel, text=msg, attachments=attachment, as_user=True)
You can also upload a file to a channel. However, when I was searching some info how to achieve that at the first time, the answer described in the SlackClient’s Github issue was actually wrong. So I tested and added a snippet. Please check the issue page.
Anyway, I also shared the snippet at the public gist. The ‘upload_file’ method takes a long text as the ‘content’ param and upload it as a file. You’ll also upload a file directory from disk or memory if you modify it slightly.