calendar的相关python库

https://django-ics.readthedocs.org/en/latest/
http://pypi.python.org/pypi/django-ical
https://django-ics.readthedocs.org/en/latest/
http://dakrauth.com/blog/entry/announcing-django-swingtime/
https://github.com/dakrauth/django-swingtime/wiki
http://www.elfsternberg.com/2010/10/06/generating-ics-files-djangoevents/
http://uggedal.com/journal/creating-a-flexible-monthly-calendar-in-django/
http://icalendar.readthedocs.org/en/latest/
http://severinghaus.org/projects/icv/
http://vobject.skyhouseconsulting.com/
http://trac.calendarserver.org/
http://blog.thescoop.org/archives/2007/07/31/django-ical-and-vobject/
https://github.com/statesofpop/django-cal