Repr.maxset Repr.maxfrozenset Repr.maxdeque Repr.maxarray

WeakKeyDictionary.keyrefs() Return an iterable of the weak references to the keys.

copy.deepcopy(x) Return a deep copy of x.

time.second In range(60).

calendar.timegm(tuple) An unrelated but handy function that takes a time tuple such as returned by the

date.isoformat() Return a string representing the date in ISO 8601 format, ‘YYYY-MM-DD’. For example, date(2002, 12, 4)

classmethod somenamedtuple._make(iterable) Class method that makes a new instance from an existing sequence or iterable.

heapq.heapify(x) Transform list x into a heap, in-place, in linear time.

itermonthdays2(year, month) Return an iterator for the month month in the year year similar to itermonthdates()

array.tostring() Deprecated alias for tobytes().