osm.py

import xml.etree.ElementTree as ET


osm_file = 'outputfile2.osm'  
root = tree.getroot()


target_relation_id = '18765511'


def find_relation_by_id(root, relation_id):
    for relation in root.findall('relation'):
        if relation.attrib.get('id') == relation_id:
            return relation
    return None

relation = find_relation_by_id(root, target_relation_id)

if relation is None:
    print(f"Relation with ID {target_relation_id} not found.")
else:
    tags = {}
    for tag in relation.findall('tag'):
        tags[tag.attrib['k']] = tag.attrib['v']


    members = []
    for member in relation.findall('member'):
        members.append({
            'type': member.attrib['type'],
            'ref': member.attrib['ref'],
            'role': member.attrib.get('role', '')
        })


    coordinates = []
    for member in members:
        if member['type'] == 'node':
            node_id = member['ref']
            node = root.find(f".//node[@id='{node_id}']")
            if node is not None:
                coordinates.append({
                    'lon': float(node.attrib['lon']),
                    'lat': float(node.attrib['lat'])
                })


    print("Tags:", tags)
    print("Members:", members)
    print("Coordinates:", coordinates)