#!/usr/bin/env python3

import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
import sys

def fetch(icon_name):
    icon_theme = Gtk.IconTheme.get_default()
    icon = icon_theme.lookup_icon(icon_name, 48, 0)
    if icon:
        return icon.get_filename()
    else:
        return

if __name__ == "__main__":
    print(fetch(sys.argv[1]))