Tutorial Moodle VPL Rock-Paper-Scissors -- Python

--D. Thiebaut (talk) 08:50, 11 June 2014 (EDT)

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Moodle VPL Tutorials

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This tutorial builds on the first one in the series, which should be done first, as the present tutorial skips some steps. In this tutorial we setup a VPL activity that will allow students to submit Python programs that play the game of Rock-Paper-Scissors.

Setup

• Moodle Version 2.7 + (Build: 20140529)
• VPL Version 3.0.1
• For details on how Moodle and VPL were installed, go to this page.

VPL Activity

Here are the main settings for the new VPL activity:

Tips & Tricks

To generate the vpl_evaluate.cases file, I found that running the program first and capturing its output, and then using this text to generate the input and output sections of the vpl_evaluate.cases file is quick and simple.

Testing

• In the Administration box, click on Test activity, then Edit, and enter the solution program below:

computer = 0
user = 0
while abs( computer - user ) < 3:
  play = input( "> " ).upper().strip()
  if len( play ) != 2:
      continue
  cPick = play[0]
  uPick = play[1]
       
  if uPick == cPick:
     print( "Tie" )
     continue
      
  pair = cPick + uPick
  if pair in [ "PR", "SP", "RS" ]:
     computer += 1
     print( "Player 1 wins" )
     continue
  else:        
     user += 1
     print( "Player 2 wins" )
     
if computer > user:
     print( "winner: Player 1 (%d to %d)" % ( computer, user ) )
else:
     print( "winner: Player 2 (%d to %d)" % ( user, computer ) )

• Save, and Evaluate
• Verify that the program runs and passes the two tests.

This concludes this tutorial