Python - addition

Question

I'm trying to make a program that adds the input, which will be in the form of '7 5 4 1' etc with a space between each number, and will add 7, 5, 4 and 1 for the output. So far I've got nothing working.

x = []
inp = int(input('Enter the expenses: '))
x.extend(inp.split())
print((sum)(x))

Any help would be appreciated

Martijn Pieters · Accepted Answer · 2014-07-30 12:04:49Z

2

You'll need to convert the input to integers after splitting:

inp = input('Enter the expenses: ')
numbers = [int(i) for i in inp.split()]
print(sum(numbers))

edited Jul 30, 2014 at 12:04

answered Jul 30, 2014 at 11:59

Martijn Pieters

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3 Comments

7hibault Over a year ago

You might want to use raw_input and sum up numbers instead of inp :)

user3879060 Over a year ago

Getting the error: TypeError: unsupported operand type(s) for +: 'int' and 'str'

Martijn Pieters Over a year ago

@Thibault: This is Python 3, there is no raw_input(). Fair point about the variable mix-up, corrected.

Kuishi · Accepted Answer · 2014-07-30 12:01:55Z

0

print(sum([int(x) for x in inp.split()]))

sum - sumarize int/float list [function(x) for x in list] - a python list comprehensions (a common and nice structure) int() - convert string to integer inp.split() - split a string into a list of strings

Explanation from inside to outside: you split the string into a list of strings, convert every string into integer-numbers and summarize it.

answered Jul 30, 2014 at 12:01

Kuishi

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