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Python

Grigorij Schleifer
Grigorij Schleifer
10,365 Points
Posted by Grigorij Schleifer
Grigorij Schleifer
10,365 Points

Number guess game "reversed"

Hey treehouse friends,

I nee help understanding the variable concept inside python.

I have created a number game where the computer guesses the number of the user.

But it doesnt work ;((((

 # -*- coding: utf-8 -*-

import random

# create a list to store the computer guesses
list = []

print("Input a number between 0 and 10")

# user input method
def input_number():
    while True:
        try:
            num_to_guess = int(raw_input("> "))
            break
        except ValueError:
            print("Something went wrong")

def game():
# let the computer gueess until the length of the list is 10
    while len(list) <  10:
# create the random number
        pc_num = random.randint(0, 10)
        list.append(pc_num)
        if pc_num == num_to_guess:
            print("PC got it")
            break

#call the method to get the number from the user
input_number()

# start the game
game()

#print the list
print(list)

The error is:

Input a number between 0 and 10
> 6
Traceback (most recent call last):
  File "reverse_guess_game.py", line 34, in <module>
    game()
  File "reverse_guess_game.py", line 26, in game
    if pc_num == num_to_guess:
NameError: global name 'num_to_guess' is not defined

What is the meaning of the global name not defined?

Every help is highly appreciated.

Grigorij

1 Answer

Steven Parker
Steven Parker
229,744 Points
Steven Parker
Steven Parker
229,744 Points

Your issue seems to be because num_to_guess is defined within the input_number() function, but the game() function is trying to access it.

:point_right: try adding num_to_guess = 0 up where you define list. That will make it global, and accessible by both functions.

Actually, the first error I got when trying this was "NameError: name 'raw_input' is not defined". Is there a missing import? But I changed it to plain input.