Question

Hello,
This is what i wrote:

def squareEach(nums):
answer = []
for num in nums:
answer.append(num*num)
return answer

def sumList(nums):
answer = 0
for num in nums:
answer += num
return answer

def toNumbers(nums):
new_nums = []
for i in nums:
new_nums.append(int(i))
return new_nums

def main():
fileName = input("What file are the numbers in? ")
sum = 0
with open(fileName, 'r') as infile:
for line in infile:
nums.append(line)
print(nums)
nums = toNumbers(line)
print(nums)
squares = squareEach(nums)
print(nums)
sum += sumList(squares)
print("The sum of the squares is: ",sum)

main()

BUT, This is what i get:

Traceback (most recent call last):
File "C:\Users\Manlai\Documents\Python programs\Assignment 4.py", line 33, in <module>
main()
File "C:\Users\Manlai\Documents\Python programs\Assignment 4.py", line 24, in main
nums.append(line)
UnboundLocalError: local variable 'nums' referenced before assignment
>>>

Please Help me <3

Answer 1

def squareEach(nums):

answer = []

for num in nums:

answer.append(num*num)

return answer

def sumList(nums):

answer = 0

for num in nums:

answer += num

return answer

def toNumbers(nums):

new_nums = []

for i in nums:

new_nums.append(int(i))

return new_nums

def main():

fileName = input("What file are the numbers in? ")

sum = 0

nums=[]

with open(fileName, 'r') as infile:

for line in infile:

nums.append(line)

print(nums)

nums = toNumbers(line)

print(nums)

squares = squareEach(nums)

print(nums)

sum += sumList(squares)

print("The sum of the squares is: ",sum)

main()