title: Calling two different Python functions from the same .py in a Shell
body: <p>I have two different function, one is a <code>Quicksort()</code> and the other is a <code>Heapsort()</code> algorithm, in the same program called <code>test1.py</code>. They get input data from a <code>.txt</code> file. When I want to run my program  <code>test1.py</code>in a shell I want to choose between them, so that I don't get two different results. My Instructor told us that we need to use <code>-quick </code>
  (for Quicksort) and <code>-heap</code>(for Heapsort). I am not sure how to do that</p>
  <p>Any suggestions?</p>