How do I add five numbers from user input in Python?

Question

As a practice exercise, I am trying to get five numbers from a user and return the sum of all five number using a while loop. I managed to gather the five numbers, but the

Answer 1

Gruszczy already solved your main problem, but here is some advice relevant to your code.

First, it's easier to do a for loop rather than keep track of iterations in a while:

s = 0
for i in range(5):
  s += int(raw_input('Enter a number: '))

Second, you can simplify it using the built-in sum function:

s = sum(int(raw_input('Enter a number: ')) for i in range(5))

Third, both of the above will fail if the user enters invalid input. You should add a try block to take care of this:

s = 0
for i in range(5):
  try:
      s += int(raw_input('Enter a number: '))
  except ValueError:
      print 'Invalid input. Counting as a zero.'

Or if you want to force 5 valid numbers:

round = 0
s = 0
while round < 5:
  try:
      s += int(raw_input('Enter a number: '))
  except ValueError:
      print 'Invalid input.'
  else:
      round += 1