Python NameError, variable 'not defined'

Question

the error it returns is:

NameError: name \'lives\' is not defined

I know the code isn\'t as efficient as possible, this is one of my first

Answer 1

When you declare it inside function they are only available in that function scope, so declare global variables outside functions and code will work fine.

import random
import time

guess = None
random_num = None
lives = 3
win = False


def main():
 global guess,rand_num
 win = False
 rand_num = 45
 lives = 10
 while lives > 0 and win == False:
     guess = int(input("Guess a number!"))
     compare()
 print("Well done!")
 time.sleep(3)

def compare():
 global lives,win
 if guess == rand_num:
     print("You guessed correct!")
     win = True
 elif guess > rand_num:
     print ("Guess lower!")
     lives = lives - 1
 else:
     print ("Guess higher!")
     lives = lives - 1

def repeat():
 replay = input("would you like to play again? Y/N")
 if replay == "Y":
     print("enjoy!")
     main()
 elif replay == "N":
     "Goodbye then, hope you enjoyed!"
     time.sleep(3)
     os._exit
 else:
     print("please enter Y or N")
     repeat()

main()
repeat()

And now this works fine. For more info about gloval vs local variables you can read: http://www.python-course.eu/global_vs_local_variables.php