Rock Paper Scissors_christinachou

#Christina Chou
#Rock Paper Scissors Game

import random
import string
playgame=True
while playgame:
	choices=['rock','paper', 'scissors']
    
    #Gets the user's move
	user=(input('Enter your move: ')).lower()
	valid_move=False
	def computer_move():
    	return choices[random.randint(0,2)]
    
    #Checks if the move is valid
	def is_valid_move():
    	if user in choices:
     	   return True
    	else:
        	return False
	print(user)
    #If the move is valid, computer makes a move
	if is_valid_move():
    	comp_choice=computer_move()
    	print('I chose '+comp_choice)
    	if(user==comp_choice):
        	print("It's a draw!")
    	elif((user=='rock' and comp_choice=='paper') or (user=='scissors' and comp_choice=='rock') or (user=='paper' and comp_choice=='scissors')):
        	print('You lose.')
    	else:
        	print('You win!')
	else:
    	print('Invalid Move. Please type rock, paper, or scissors.')
    #If the user does not want to play again, exit the game
	print("Play again? y or n")
	playagain=input()
	print(playagain)
	if playagain!='y':
		playgame=False

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