python - convert string to int with space delimiter

Question

I'm using some library which converts data to other format. As I don't want to debug this library, I'd like to solve the solution on my code.

The input is integer and maybe -1. In this case and the library output is - 1. I need to compare this integer if this is positive or negative. How can I handle the - 1 for this check?

ihdv · Accepted Answer · 2020-12-20 07:28:50Z

1

If you have a string x="- 1" and want to convert it to int, eval(x) works.

Python 3.8.5 (default, Jul 28 2020, 12:59:40) 
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> x = "- 1"
>>> intx = eval(x)
>>> print(type(intx))
<class 'int'>
>>> print(intx)
-1

edited Dec 20, 2020 at 7:28

answered Dec 20, 2020 at 7:26

ihdv

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1 Comment

Joran Beasley Over a year ago

at least use ast.literal_eval its marginally safer :) good answer though

Joran Beasley · Accepted Answer · 2020-12-20 07:26:39Z

0

int("- 1") # nvm this doesnt work in py3

i think works (but not float('- 1') )

you could also just remove all the spaces

float("- 1".replace(" ",""))

edited Dec 20, 2020 at 7:26

answered Dec 20, 2020 at 7:25

Joran Beasley

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1 Comment

Joran Beasley Over a year ago

lol weird it works in py2 ... i guess they got rid of that in py3

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