</source>You should have seen three lines being displayed: the text "python code", a greeting, and a result of a math calculation. The IF '''if''' statement in the code above is a special '''if''' statement needed to make sure that your "main" code only runs when you want it to. More on that later.

In order to use functions from other scripts, you are required to either issue the import command in your ipython3 shell environment, or use the '''import ''' command within your Python script itself.<br><br>We can demonstrate the use of re-using functions from another script by simply '''issuing statements from the ipython shell by calling to call a function that is related to from your lab3a.py Python script'''. But care MUST be taken to first use the import command to load in the function declarations from your Python script to your ipython shell environment first.<br><br>