# collective/icalendar

icalendar parser library for Python

Repository: https://github.com/collective/icalendar
Canonical: https://ross.abutalabs.com/products/collective-icalendar
Homepage: https://icalendar.readthedocs.io/en/stable/
Language: Python
License: NOASSERTION
License Family: other
Topics: hacktoberfest, alarm, event, generator, icalendar, ics, journal, parser, rfc5545, todo
Last push: 2026-09-02T21:30:08+00:00

## Health v2 (maintenance only)
Score: 99/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 100, release rhythm 98, longevity 100
- inputs: {"age_days": 5495, "days_push": 0, "days_rel": 14, "gap_med": 17, "n_releases_24m": 26}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1171, forks 397 (observed 2026-09-03T02:15:10.132567+00:00)

## What it is
A Python library for parsing and generating iCalendar (RFC 5545) files. It can create, inspect, and modify calendar events, todos, journals, and alarms with support for multiple timezone implementations.

## Use cases
- parse .ics calendar files in python
- generate icalendar event files
- read and modify calendar events programmatically
- convert calendar data to python objects
- handle recurring events and timezones in ics files
- create todo and journal entries in ical format

## When to choose
- you need RFC 5545 compliant iCalendar parsing or generation in Python
- you need to read, create, or modify .ics files with timezone support
- you want a mature, well-tested library with active maintenance

## When to avoid
- you need a full calendar server or scheduling engine rather than a parser library
- you work in a non-Python stack
- you need Google/Outlook calendar API integration rather than iCalendar file handling

## Facets
- artifact type: library
- maturity: stable
- function: parser, serialization, date-time
- domain: files, developer-tools
- platform: python, cross-platform
- tags: icalendar, rfc5545, calendar, ics, timezone

## Member repositories
- collective/icalendar (main) score 99

## Provenance
- Observed fields: from GitHub, fetched 2026-09-03T02:15:10.132567+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:28:46.197964+00:00, confidence not recorded.
  - readme: https://github.com/collective/icalendar (fetched 2026-09-03T02:15:10.132567+00:00, sha e9549e4d439c)
  - registry_pypi: https://pypi.org/pypi/icalendar/json (fetched 2026-08-29T12:35:17.546959+00:00, sha 54a520132df5)
- Data as of 2026-08-30T08:39:29.467469+00:00.