afval calendar generator

afval.py

import json
import datetime
from uuid import uuid4

j = json.load(open("afval_2021.json"))

print("""BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Maka//Maka
BEGIN:VTIMEZONE
TZID:Europe/Berlin
TZURL:http://tzurl.org/zoneinfo-outlook/Europe/Berlin
X-LIC-LOCATION:Europe/Berlin
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:19700329T020000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:19701025T030000
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
END:STANDARD
END:VTIMEZONE""")

for l in j:
	nextdt = (datetime.datetime.strptime(l['dt'], "%Y%m%d") + datetime.timedelta(days=1)).strftime("%Y%m%d")
	tpl = f"""\
BEGIN:VEVENT
DTSTAMP:20210119T201507Z
UID:{uuid4()}
DTSTART;VALUE=DATE:{l['dt']}
DTEND;VALUE=DATE:{nextdt}
SUMMARY:{l['afval']}
END:VEVENT"""
	print(tpl)
print("END:VCALENDAR")