Calling a python script that returns a value from perl

Question

I have a python function as

import commands
output=commands.getputput("ls -l")
print output
return output

I need to get this return value from python function from my perl script

my($command)=`$python_script_path`;
print $command;

My problem is that by printing the ouput in python i can get my results on screen but i actually require this output in Perl script as well so I would rather return it. How can I achieve it ? Also please note I do not want to use inline python. thanks!!

For you to print it in your perl script, doesn't it already have to exist in your $command variable? — Hunter McMillen
– Hunter McMillen, Commented Dec 18, 2012 at 14:34
but doesnt the backtick operation do that ? store the command output in that variable ? — tekken
– tekken, Commented Dec 18, 2012 at 14:36
That is what I am saying, the output of the python script you called will be stored in $command — Hunter McMillen
– Hunter McMillen, Commented Dec 18, 2012 at 14:37
As a side note, the commands module is deprecated in favor of subprocess. — mgilson
– mgilson, Commented Dec 18, 2012 at 14:38
but it doent seem to work. I have been wondering why !! i thought i was wrong somewhere — tekken
– tekken, Commented Dec 18, 2012 at 14:40

Kugel · Accepted Answer · 2012-12-18 14:38:25Z

2

The commands module is deprecated since 2.6. Use subprocess instead.

p = subprocess.Popen(['ls', '-l'], stdout=subprocess.PIPE, shell=True)
print p.communicate()[0]

answered Dec 18, 2012 at 14:38

Kugel

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2 Comments

Katriel Over a year ago

Wrong way. The OP is calling Python from Perl.

tekken Over a year ago

sorry guys but i require commands.getstatusoutput(). Also most of the systems in my college run older python versions.

Community · Accepted Answer · 2017-05-23 12:27:39Z

0

Return codes are numerical values.

Your best bet is to print the output and capture the output in Perl.

This might help: How to call a python script from Perl?

edited May 23, 2017 at 12:27

CommunityBot

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answered Dec 18, 2012 at 14:35

Tuim

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1 Comment

tekken Over a year ago

thanks...Isnt that what I have done? am i wrong somewhere in the flow ?

alex · Accepted Answer · 2012-12-18 17:04:11Z

0

You also can open pipe to the Python script right in the file 'open':

open PYTHON, "$python_script_path|";
while(<PYTHON>){
 print;
}
close PYTHON;

answered Dec 18, 2012 at 17:04

alex

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