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Rock Paper Scissors Lizard Spock in Python


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#1 afmack   Members   -  Reputation: 111

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Posted 10 October 2012 - 02:36 AM

So, I'm doing this assignment and I cannot figure out what I'm doing wrong. I'm supposed to find the difference between the player's number and computer's number and then use modulus division. I then use the resulting number to decide on whether the computer or the player wins the hand. For some reason though python seems to be skipping my else statement or something. Any help would be appreciated. Posted Image



def number_to_name(number):
  
	if number == 0:
		name = "rock"
		return name
  
	elif number == 1:
		name = "Spock"
		return name
  
	elif number == 2:
		name = "paper"
		return name
  
	elif number == 3:
		name = "lizard"
		return name
  
	elif number == 4:
		name = "scissors"
		return name
  

  
def name_to_number(name):
  
	if name == "rock":
		number = 0
		return number
  
	elif name == "Spock":
		number = 1
		return number
  
	elif name == "paper":
		number = 2
		return number
  
	elif name == "lizard":
		number = 3
		return number
  
	elif name == "scissors":
		number = 4
		return number
  
  
  


def rpsls(guess):
  
	import random
  
	player_number = name_to_number(guess)
	comp_number = random.randrange(0, 5)
	winner = (comp_number - player_number) % 5
  
	print ""
	print "Player chooses " + number_to_name(player_number)
	print "Computer chooses " + number_to_name(comp_number)
  
  
  
	if (comp_number - player_number) % 5 == 1 or 2:
		print "Computer wins!"
	elif (comp_number - player_number) % 5 == 0:
		print "Player and computer tie!"
	else:
		print "Player wins!"
  
  
  
  
  
rpsls("rock")
rpsls("Spock")
rpsls("paper")
rpsls("lizard")
rpsls("scissors")



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#2 PyroDragn   Members   -  Reputation: 404

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Posted 10 October 2012 - 02:50 AM

You say it seems to be skipping your else statement, can you say what the result of the program is, and what you would expect? Ie. Is it not running, is it giving incorrect win values?

#3 bambambam   Members   -  Reputation: 110

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Posted 10 October 2012 - 12:40 PM

if (comp_number - player_number) % 5 == 1 or 2:


This can't be executed correctly.
Firt you don't need to use the complete formula but just winner so you would get 'if winner == 1 or 2'
But then you see the real mistake, the or function can't be applied like that, you should write 'if winner == 1 or winner ==2'.

#4 Funker   Members   -  Reputation: 109

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Posted 14 October 2012 - 03:10 PM

thanks bambambam


[source lang="python"]def rpsls(guess): import random player_number = name_to_number(guess) comp_number = random.randrange(0, 5) winner = (comp_number - player_number) % 5 print "" print "Player chooses " + number_to_name(player_number) print "Computer chooses " + number_to_name(comp_number) if winner == 1 or winner == 2: print "Computer wins!" elif winner == 0: print "Player and computer tie!" else: print "Player wins!"[/source]

Edited by Funker, 14 October 2012 - 03:10 PM.





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