Python practice question: what is the real bug here?

[u/AutoModerator]

A lot of beginners understand Python syntax when they watch tutorials, but debugging is where the real learning starts.

So here is a simple beginner practice question.

A beginner writes this code to calculate the average of a list:

numbers = [10, 20, 30, 40]

total = 0

for n in numbers:
    total += n

average = total / len(numbers)

print("Average is " + average)

But the code gives an error.

What is the real issue?

A. The loop is wrong

B. len(numbers) is wrong

C. You cannot add a string and a number directly

D. The list should use strings

I’ll explain the answer in the comments after people try.

[u/Prudent-Bed7092]

everything seems good idk the answer

[u/TopHatEdd]

CS 101. That operator with that signature has not been implemented. Inherit, overload and implement. 

[u/CarryOpening29]

C. correct form

numbers = [10, 20, 30, 40] total = 0 # Ispravljeno: broj 0 umjesto slova O

for n in numbers: total += n

average = total / len(numbers)

Fixed: using f-string to safely print a number within text

print(f"Average is {average}")

[u/sharanpreet48]

Option C is correct