rpsgame.py

import random, time

while True: # Keep asking until the player enters a valid move:
    print('Enter your move: (r)ock (p)aper (s)cissors or (q)uit')
    player = input()
    if player == 'r' or player == 'p' or player == 's':
        break # Break out of the player input loop.
    print('Type one of r, p, or s.')

# Display what the player chose:
if player == 'r':
    print('ROCK versus...')
elif player == 'p':
    print('PAPER versus...')
elif player == 's':
    print('SCISSORS versus...')

# Add dramatic pause:
print('3')
time.sleep(1)
print('2')
time.sleep(1)
print('1')

# Display what the computer chose:
computer = random.choice(['r', 'p', 's'])
if computer == 'r':
    print('ROCK')
elif computer == 'p':
    print('PAPER')
elif computer == 's':
    print('SCISSORS')

# Display the result:
if player == computer:
    print('It is a tie!')
elif (player == 'r' and computer == 's') or (player == 'p' and computer == 'r') or (player == 's' and computer == 'p'):
    print('You win!')
elif (player == 'r' and computer == 'p') or (player == 'p' and computer == 's') or (player == 's' and computer == 'r'):
    print('You lose!')