DigitalOcean tutorial on using Flask and Python 3 to write Slack slash commands

I have written a DigitalOcean tutorial on using Flask and Python 3 to write custom Slack slash commands to suit the needs of your Slack team. The tutorial is located at https://www.digitalocean.com/community/tutorials/how-to-write-a-slash-command-with-flask-and-python-3-on-ubuntu-16-04 and the source code for the tutorial can be found at https …

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