Full error:

line 10, in <module>colour = play()
NameError: name 'play' is not defined

I can't seem to find a reason for this issue anywhere on here. I am trying to assign the returned string to the variable colour but it is refusing to recognise the function "play".

import random
Funds = 10
Bet = "Red"
betsequence = [0,0,0,0,0,0,0,0,0,0,0,0,0,0]
counter = -1
totalcount = 0while(Funds > 0):counter = counter + 1colour = play()if colour == Bet:Funds = Funds+(betsequence[counter]*2)counter = -1else:Funds = Funds-betsequence[counter]print(colour)totalcount = totalcountdef play():random.seed(a=None, version=2)rannum = random.uniform(0,1)result = rannum*14if (result > 1) and (result < 8):return "Red"elif result < 1:return "Green"else:return "Black"

You need to define the name before it is first used. In your case, moving the definition of play to before the while loop will solve the issue.