Use an action from the Marketplace

- To quote a description from GitHub, … "the Marketplace contains tools that add functionality … and improve your workflow." … In our case, this is literally true because … along with applications, actions are also available. … Let's take a look at how we can find an action … in the Marketplace and add it to a new workflow … in a repository. … I'm working in a new repository with a Python app … and I haven't created a workflow yet. … Let's search the Marketplace for an action that can … help with linting the Python files in this repo. … We can start by browsing through the Marketplace … and indeed the Marketplace link is available from just … about every page on GitHub. … Since the Marketplace carries a variety of applications, … we can focus our search on actions by clicking the … actions filter under types. … We can narrow things down even further by … selecting a category filter as well. … For now, I'll just search for Python. … This filters the available actions even further. … Now we can select the best action available …