Add python script for generating talks.txt

fetch.py

@@ -0,0 +1,58 @@
+#!/usr/bin/python3
+
+from argparse import ArgumentParser
+from urllib.request import urlopen
+from lxml import etree
+
+def filter_schedule(url, ids, rooms, tracks):
+    xml = urlopen(url).read()
+    schedule = etree.fromstring(xml)
+
+    for day in schedule.iter('day'):
+        for room in day.iter('room'):
+            for event in room.iter('event'):
+                id = event.get('id')
+                if ids and id not in ids:
+                    continue
+
+                room_name = room.get('name')
+                if rooms and room_name not in rooms:
+                    continue
+
+                track = event.find('track').text
+                if tracks and track not in tracks:
+                    continue
+
+                title = event.find('title').text
+
+                speaker_list = None
+                if event.find('persons') is not None:
+                    speakers = []
+                    for speaker in event.find('persons').iter('person'):
+                        speakers.append(speaker.text)
+                    speaker_list = ', '.join(speakers)
+
+                yield {
+                    'id': id,
+                    'room': room_name,
+                    'track': track,
+                    'title': title,
+                    'speakers': speaker_list,
+                }
+
+def main():
+    parser = ArgumentParser()
+    parser.add_argument('url', help='schedule url')
+    parser.add_argument('--ids', nargs='+', help='select given ids')
+    parser.add_argument('--rooms', nargs='+', help='select given rooms')
+    parser.add_argument('--tracks', nargs='+', help='select given tracks')
+    args = parser.parse_args()
+
+    ids = args.ids or None
+    rooms = args.rooms or None
+    tracks = args.tracks or None
+    for event in filter_schedule(args.url, ids, rooms, tracks):
+        print(f"{event['id']}\t{event['title']}\t{event['speakers']}")
+
+if __name__ == '__main__':
+    main()