python - Error message saying count is not defined

Question

Here is the full script:

import random

aNumber=random.randrange(100)+1
print("I am thinking of a number 1 through 100.")
if aNumber>50:
    print("It has a value greater than 50.")
else:
    print("It has a value less than or equal to 50.")
while True:
    answer=int(raw_input("What is your guess?
"))
    count+=1
    if aNumber==answer:
        print("Congratulations, you have guessed the number!")
    elif aNumber<answer:
        print("Try a lower number")
    elif aNumber>answer:
        print("Try a higher number")

Here is the error message I am getting:

line 11, in <module>
    count+=1
NameError: name 'count' is not defined

question from:https://stackoverflow.com/questions/65944458/error-message-saying-count-is-not-defined

Answer 1

You need to define count prior to increasing its value through the += 1 operator. Indeed, count += 1 is equivalent to count = count + 1 and thus count must be defined before (e.g.: count = 0 at the beginning of your script).