One Too Many

The function average(numbers) computes the mean of a list, and passing_grade(scores) uses it to decide if a student passes (average >= 60).

A student with scores [60, 70, 80] — average 70 — should clearly pass. But the function says 'fail'.

The arithmetic logic looks correct. Where is the counter going wrong?

# your fix

+ must use for

- must not call sum()

- must not call len()

hint 2after hint 1

hint 3after hint 2

solution

Read the code. Before running anything: what does the last line below give?

def average(numbers):

total = 0

count = 1

for n in numbers:

total += n

count += 1

return total / count

def passing_grade(scores):

avg = average(scores)

if avg >= 60:

return "pass"

return "fail"

>>> average([60, 70, 80])