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Python Python Basics (2015) Number Game App Number Game Introduction

Arikaturika Tumojenko
Arikaturika Tumojenko
8,897 Points
Posted by Arikaturika Tumojenko
Arikaturika Tumojenko
8,897 Points

ValuerError: invalid literal for int() with base 10: '' meaning?

So, this is my code:

# generate a random number between 1 and 10
secret_num = random.randint(1, 10)

while True:
    # get a number guess form the player
    guess = int(input("Guess a number between 1 and 10: "))

    # compare guess to secret number
    if guess == secret_num:
        print("Your guess is correct! My number was {}".format(secret_num))
        break
    else:
        print("Ups, your guess is incorrect! Try again!")
        continue

The only difference between what Kenneth wrote and what I wrote is that I added "continue" in the else statement. I repeatedly entered number 5 in order to guess the name and after a few times I got this error:

"ValuerError: invalid literal for int() with base 10:"

The program stopped working afterwards. Does anyone know what does it mean and why I got this error?

2 Answers

William Harrison
William Harrison
9,585 Points

A non-integer was entered. When I ran your code it ran fine, but when I hit enter without a number first. ValueError: invalid literal for int() with base 10: '' At the end of my error is an empty string, when I enter + I got : ValueError: invalid literal for int() with base 10: '+'. I hope this helps find what happened.

Steven Parker
Steven Parker
229,657 Points
Steven Parker
Steven Parker
229,657 Points

My guess is that while you "repeatedly entered number 5", you accidentally entered another non-numeric character instead or along with it. That would cause that specific error and stop the program.

The "continue" at the end is not needed, but doesn't cause any issues.