ango

Use rpsrunner.py to play unranked matches on your computer.

Source code:

import random

pmc = "R"

def v(x, y):
  if x=="R" and y=="S" or x=="P" and y=="R" or x=="S" and y=="P":
    return 1
  else:
    return 0
    
def s(x):
  if x=="R":
    return "P"
  elif x=="P":
    return "S"
  else:
    return "R"
    
if input == "": # initialize variables for the first round
	output = random.choice(["R","P","S"])
	pmc = output
else:
  if v(pmc, input)==1:
    #if you win
    output = pmc
  else:
    #if you lose
    output = s(input)
    pmc = output