(OT) Help with running a Perl script from Python

always_coys has asked for the wisdom of the Perl Monks concerning the following question:

Hi Monks I am trying to run a Perl script from Python in Windows. It is my first attempt and I am getting nowhere. My code for running a Hello World program in Perl, from Python is given below.

import subprocess, sys

perl = "C:\\Perl64\\bin\\perl.exe" 
perl_script "C:\\vub_work\\py_learn\\hello.pl"

pl_script = subprocess.Popen([perl, perl_script], stdout=sys.stdout) 
pl_script.communicate()
[download]

I end up getting up the following error:

 File "<ipython-input-5-d6c6696cc648>", line 4
    perl_script "C:\\vub_work\\py_learn\\hello.pl"
                ^ 
SyntaxError: invalid syntax
[download]

It would be great if you could help.

Node original content restored and reformatted by erzuuli

Comment on (OT) Help with running a Perl script from Python Select or Download Code

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Re: (OT) Help with running a Perl script from Python by Corion (Patriarch) on Dec 06, 2020 at 09:37 UTC
This is purely a Python question. Have you looked at the problematic line? Have you compared it with the previous line? What is the problematic line supposed to do? What is the previous line supposed to do?	[reply]
Re^2: (OT) Help with running a Perl script from Python by always_coys (Novice) on Dec 06, 2020 at 09:47 UTC
Hi, the problematic line simply refers to the location where my Hello World program in Perl is located. Thanks.	[reply]
Re^3: (OT) Help with running a Perl script from Python by AnomalousMonk (Archbishop) on Dec 06, 2020 at 10:03 UTC
The originally posted code: `perl = "C:\\Perl64\\bin\\perl.exe" perl_script "C:\\vub_work\\py_learn\\hello.pl"` [download] In the `perl = "C:\\Perl64\\bin\\perl.exe"` statement, why is the quoted string assigned to the `perl` variable, and in `perl_script "C:\\vub_work\\py_learn\\hello.pl"` why is the quoted string not assigned to the `perl_script` variable? Give a man a fish: `<%-{-{-{-<`	[reply] [d/l] [select]
Re: (OT) Help with running a Perl script from Python by LanX (Saint) on Dec 06, 2020 at 09:54 UTC
you are wrong here and should ask in a Python board. This question is so lazy (the error message is different from the shown source) that nobody here should even consider feeding it. Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery}	[reply]
Re^2: (OT) Help with running a Perl script from Python by always_coys (Novice) on Dec 06, 2020 at 10:00 UTC
Thanks. Will remove the question.	[reply]
Re^3: (OT) Help with running a Perl script from Python by AnomalousMonk (Archbishop) on Dec 06, 2020 at 10:09 UTC
Please don't delete your post. Please see How do I change/delete my post? which recommends against such deletion. Give a man a fish: `<%-{-{-{-<`	[reply] [d/l]
Re: (OT) Help with running a Perl script from Python by perlfan (Parson) on Dec 07, 2020 at 20:08 UTC
This is not a "running perl from python" specific question either, you can treat it as running any external program from Python. They do that a lot, I hear. xD	[reply]