class collections.UserDict([initialdata]) Class that simulates a dictionary. The instance’s contents are kept in a regular dictionary

class collections.abc.KeysView class collections.abc.ValuesView ABCs for mapping, items, keys, and values

timezone.dst(dt) Always returns None.

time.dst() If tzinfo is None, returns None, else returns self.tzinfo.dst(None)

classmethod datetime.fromtimestamp(timestamp, tz=None) Return the local date and time corresponding to the POSIX timestamp,

peek() If self is alive then return the tuple (obj, func, args, kwargs). If self is dead then

class datetime.tzinfo This is an abstract base class, meaning that this class should not be instantiated directly. You need

calendar.monthcalendar(year, month) Returns a matrix representing a month’s calendar. Each row represents a week; days outside

class datetime.timezone(offset[, name]) The offset argument must be specified as a timedelta object representing

weakref.ProxyTypes Sequence containing all the type objects for proxies. This can make it simpler to test if an object is a