python-version.yml

##  Named of the workflow.
name: Python version
## Set the trigger policy.
## In this case, the workflow is execute on a `push` event,
## or when a new commit is pushed to the repository
on: [push]
## List the steps to be executed by the workflow
jobs:
  ## Set the name of the job
  check-python-version:
    ## Configure the operating system the workflow should run on.
    ## In this case, the job on Ubuntu
    runs-on: ubuntu-latest
    ## Define a sequence of steps to be executed 
    steps:
      ## Use the public `checkout` actoin  in version v2  
      ## to checkout the existing code in the repository
      - uses: actions/checkout@v2
      ## Use the public `setup-python` action  in version v2  
      ## to install python on the Ubuntu based environment 
      - uses: actions/setup-python@v2
      ## Executes the `python --version` command
      - run: python --version