Inline - Accessing python variables from python in perl

Question


use Inline Python => <<END;
var_py = "test"

END
my $var1 = "from_perl";
print "var1 $var1\n";
print "variably from py $var_py\n";

Output:

var1 from_perl

variably from py

I get empty value for the python variable defined in Inline Python. Can someone please suggest how to read variables defined in python from perl

Tip: Using <<'END' instead of <<END means you don't have to escape anything — ikegami
– ikegami, Commented Jan 19, 2021 at 12:40

ikegami · Accepted Answer · 2021-01-19 12:54:03Z

3

use Inline Python => ( <<'__EOS__' =~ s/^[ ]{3}//mgr );

   import sys

   var_py = "test"

   def get_var_py():
      return var_py

   def _get_global_var(name):
      name = name.decode('UTF-8')
      return globals()[name]

   def _get_module_var(mod_name, var_name):
      mod_name = mod_name.decode('UTF-8')
      var_name = var_name.decode('UTF-8')
      return getattr(sys.modules[mod_name], var_name)

__EOS__

sub get_global_var { my @args = @_; utf8::encode($_) for @args; _get_global_var(@args) }
sub get_module_var { my @args = @_; utf8::encode($_) for @args; _get_module_var(@args) }

say "Variable from py: " . get_var_py();
say "Variable from py: " . get_global_var('var_py');
say "Variable from py: " . get_module_var('__main__', 'var_py');

Output

Variable from py: test
Variable from py: test
Variable from py: test

edited Jan 19, 2021 at 12:54

answered Jan 19, 2021 at 12:14

ikegami

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2 Comments

siri Over a year ago

Hi , I just gave an example of one variable, I have multiple such variables defined as constants in a python module and wants to access them from perl. Is there any way?

ikegami Over a year ago

Added to answer. Ref

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