class collections.abc.AsyncIterator ABC for classes that provide __aiter__ and __anext__ methods.

default_factory This attribute is used by the __missing__() method; it is initialized from the first argument to

class weakref.WeakValueDictionary([dict]) Mapping class that references values weakly. Entries in the dictionary will be discarded

types.TracebackType The type of traceback objects such as found in sys.exc_info()[2].

classmethod datetime.now(tz=None) Return the current local date and time. If optional argument tz is None

calendar.isleap(year) Returns

iterweekdays() Return an iterator for the week day numbers that will be used for one week. The first value from the iterator

class calendar.TextCalendar(firstweekday=0) This class can be used to generate plain text calendars.

datetime.astimezone(tz=None) Return a datetime object with new tzinfo attribute tz, adjusting

date.min The earliest representable date, date(MINYEAR, 1, 1).