Code: Creating a basic python game?

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Hi, I'm practicing coding using python and I'm working with this small project of mine. Im having issue running or calling the function into if else.

Target :
I want to generate a random between 0-900 and define a range,
if 0-300 then its 1 that represent rock, 301-600 is paper and 601-900 is scissors.. then player will select 1-3 for (rock paper scissors) if it matches tie. Thanks

Heres my code:

print ("Welcome to RPS GAME, Winning rules as follows: \n"
       +"Rock vs Paper = Paper Wins \n"
       +"Paper vs Scissor  = Scissor Wins \n"
       +"Scissor vs Rock = Rock Wins \n" )

#CPU Random
cpurange = range(300)
cpu = random.choice(cpurange)

def getvalue(cpu):
   if cpu <= 300:
       getvalue = 1

#Human will select
human = int(input ("Pick 0-Rock, 1-Paper, 2-Scissors?: "))

if human == 1 and getvalue == 1:
  print ("TIE")

print ("##### RESULT ##### \n"
       +"Human: {}".format(human))

Result is not working if thinking if I properly calling the def getvalue function into below if/else statement.

Thanks