Question

Assuming the perl code is something like this…

open(STDOUT, ">$PName") || die "Can't redirect stdout";
$status = system("python Example.py $PName.txt");

(That is taken from http://www.linuxquestions.org/questions/programming-9/perl-script-call-python-linux-551063/)

What do I have to do in python to be able to pass a string to the perl script?

Would I need to simply return the string? or print to console? or something else?

Answer 1

The system command is not useful in Perl for capturing output of a command. You should use backticks to execute a command and write to stdout in the Python script.

#-- returns one string
$result = `command arg1 arg2`;

#-- returns a list of strings
@result = `command arg2 arg2`;

See the linked source below for more information.

Source: executing external commands in Perl