A Python OpenBox pipe menu for recently used documents

#!/usr/bin/env python
#
# Copyright (c) who am I kidding, this is open to the F/OSS community.
# Written in 2016, A.T., LQ username: goumba
# All rights reserved.
# 
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#     * Neither the name of this website nor the
#       names of its contributors may be used to endorse or promote products
#       derived from this software without specific prior written permission.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

import os
import xml.etree.ElementTree as et

show_path = True
recent_fie = "~/.local/share/recently-used.xbel"

def walk_items(elem: et.Element) -> None:
    for _child in elem:
        try:
            _tag = elem.tag
            if 'bookmark' == _tag:
                _ref = elem.attrib['href']
                # Strip off the protocol for display in the menu
                _prefix = _ref.find('://') + 7
                _path, _file = os.path.split(_ref[_prefix:])
                if show_path:
                    _path = ' ({})'.format(_path)
                print(
"""  <item label="{}{}">
      <action name="Execute">
          <command>xdg-open "{}"</command>
      </action>
  </item>""".format(_file, _path, _ref)
                )
        except KeyError:
            pass
        walk_items(_child, show_path)
    
def make_menu() -> None:
    tree = et.parse(recent_file)
    root = tree.getroot()
    print("<openbox_pipe_menu>")
    walk_items(root)
    print("  <separator />")
    print(
        """  <item label="Clear Recent Documents">
      <action name="Execute">
          <command>rm {}</command>
      </action>
  </item>
</openbox_pipe_menu>
""".format(recent_file)
    )

if '__main__' == __name__:
    make_menu()