How to convert a string of numbers into a list of int in python3

Question

sample input:

32 42 4 423 43 2 3

my code to convert the input into a list of integers:

mylist = map(int, (list(input().split(' '))))
print(mylist)

output of my code:

<map object at 0x7f0eb38f1d30>

Expected output:

[32, 42, 4, 423, 43, 2, 3]

Reut Sharabani · Accepted Answer · 2016-01-22 16:54:33Z

1

If you want a list use a list comprehension:

mylist = [int(x) for x in input.split(' ')]

The result of map is a map object, and you're getting it's representation.

You can convert it to a list:

mymap = map(int, (list(input().split(' '))))
print(list(mymap))

answered Jan 22, 2016 at 16:54

Reut Sharabani

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2 Comments

tnecniv Over a year ago

map() has such a useless output, why didn't the python3 writers make it return a list by default? When is <map object at 0x7f0eb38f1d30> ever useful?

Reut Sharabani Over a year ago

When you don't need the list. If you're applying a function to a very long list it's often wasteful to build it in memory.

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