My code looks correct to me and it runs the sum in my jypter notebook but i still keep getting an error.
total = 0
for num in scores:
total += grades
The indentation is not correct above it needs to be re done in jyputer withs tabs.
In : grades_sum([53,7,79]). Out: 139
Oops, try again. It looks like your grades_sum function doesn't properly compute the sum of all the grades! It returned None instead of 139 for grades_sum([53, 7, 79])
am I missing some sort of bug? Hi!!