Output a string that would generate this RRULE if passed to rrulestr. This is mostly compatible with RFC5545, except for the

Pickle and unpickle an object using ``pickle.dumps`` / ``pickle.loads``

Pickle and unpickle an object using ``pickle.dump`` / ``pickle.load`` on a temporary file.

Two ways to specify this: +1MO or MO(+1)

Decorator for rruleset methods which may invalidate the cached length.

The CPython version of ``fromutc`` checks that the input is a ``datetime`` object and that ``self`` is attached as its ``tzinfo``.

Create a somewhat clean import base for lazy import tests

Given a datetime and a time zone, determine whether or not a given datetime is ambiguous (i.e if there are two times differentiated only by t

Sets the ``tzinfo`` parameter on naive datetimes only This is useful for example when you are provided a datetime that may have either a

Return the display name of the time zone.

Fast track version of fromutc() returns the original ``dt`` object for any valid :py:class:`datetime.datetime` object.

The ``tzfile`` implementation of :py:func:`datetime.tzinfo.fromutc`. :param dt: A :py:class:`datetime.datetime` object.

Given a timezone-aware datetime in a given timezone, calculates a timezone-aware datetime in a new timezone. Since this is t

Given a datetime in UTC, return local time

Fixture to pass fuzzy=True or fuzzy=False to parse

This retrieves a time zone from the local zoneinfo tarball that is packaged with dateutil. :param name: An IANA-style time zone

Get the zonefile metadata See `zonefile_metadata`_ :returns: A dictionary with the database metadata .. deprecated:: 2.6

Whether or not the "wall time" of a given datetime is ambiguous in this zone. :param dt: A :py:class:`datetime.d

Return a list of all time zones known to the system.

Parse a valid ISO time zone string. See :func:`isoparser.isoparse` for details on supported formats. :param tzstr:

Rebuild the internal timezone info in dateutil/zoneinfo/zoneinfo*tar* filename is the timezone tarball from ``ftp.iana.org/tz``.

Given a datetime that may be imaginary, return an existing datetime. This function assumes that an imaginary datetime represents what the