Single line inputs for a list in Python 3

Question

Is there some way to take a set number of multiple inputs for a list in Python 3.7?

I tried this:

MyList=[int(x) for x in input().split(" ",N)]

when N is the number inputs I want. but whenever I try to run my code I get an error saying:

MyList=[int(x) for x in input().split(" ",N)]
File "<string>", line 1
1 2 3 4 5 6 7
  ^
SyntaxError: invalid syntax

The expected Input is:-

Suppose N=7,

1 2 3 4 5 6 7

This should make it a part of the list

MyList=[1,2,3,4,5,6,7]

You haven't actually shown an error. But what is that `N` at the end? — Daniel Roseman, Oct 10 '19 at 20:20
@Mr_U4913 split splits on space by default can just use .split() — Chris, Oct 10 '19 at 20:23
@Daniel Roseman N stands for the number of elements, in this case its the max split — yohoo, Oct 10 '19 at 20:44
Fine but *what is the error*? And where did you define the value of N? — Daniel Roseman, Oct 10 '19 at 20:48
@Daniel Roseman The error is that it won't accept the single line inputs. It say's invalid syntax. As for N, the user defines it. — yohoo, Oct 10 '19 at 21:58

Barmar · Accepted Answer · 2019-10-10T22:01:21.863

0

Don't use the N argument to split. If there are more items in the input than this, the remaining ones will all be combined in the last element of the list. But this won't be a valid number, so you'll get an error when it tries to convert that to int.

If you only want the first N elements of the input, use a list slice after splitting.

MyList=[int(x) for x in input().split(" ")[:N]]

It looks like you're using Python 2.x, so you need to use raw_input() instead of input(). See input() error - NameError: name '...' is not defined.

MyList=[int(x) for x in raw_input().split(" ")[:N]]

edited Oct 10 '19 at 22:01

answered Oct 10 '19 at 20:25

Barmar

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Are you typing the input, or did you put the input in the script? – Barmar Oct 10 '19 at 20:52
I am typing the input – yohoo Oct 10 '19 at 21:56
1

Then the error you reported can't happen. It's marking that as a syntax error in the script. – Barmar Oct 10 '19 at 21:59
Are you using MySQL 2.x or 3.x? – Barmar Oct 10 '19 at 21:59
If you're using 2.x you need to use `raw_input()`. – Barmar Oct 10 '19 at 22:00
I am using python 3.7 – yohoo Oct 10 '19 at 22:02
I thnk you're mistaken. I tried your code in Python 2, I got your error. Python 3 doesn't try to parse the input. – Barmar Oct 10 '19 at 22:05

Single line inputs for a list in Python 3

1 Answers1