Makes a file to list the id of the objects to be deleted by osmium removeid

list_osmium_removeid.py

""" When we delete nodes from an .osm using JOSM, the nodes remain in the file marked as deleted. This
scripts creates a .txt with the ids of the deleted objects (nodes, ways and relations) to use as input for the function
'removeid' from osmium in order to remove them from the file. """

import xml.etree.ElementTree as ET

filename = 'path_to_the.osm'
osm_tree = ET.parse(filename)
root = osm_tree.getroot()
with open(f'ids_to_delete.txt', 'w') as f:
    for child in root:
        try:
            if child.attrib['action'] == 'delete':
                f.write(f'{child.tag[0]}{child.attrib["id"]}\n')
        except KeyError:
            pass