Chapter 6, exercise 14:

Use the function from the previous three problems to implement a program that computes the sum of the squares of numbers read from a file. Your program should prompt for a file name and print out the sum of the squares of the values in the file. Hint: use readlines()

My code:

def main():

print("If you are not giving the full path, then that file must be present in the same directory.")

filename = input("Please input the file name:")

sum_of_squares(filename)

def sum_of_squares(filename):

fopen = open(filename, 'r')

sum = 0

for items in fopen.readlines():

items = int(items)

sum += items**2

print("The final sum is:", sum)

main()

Code Screenshot:

Error:

I am stuck here, please help! Thank you.