class collections.abc.Sized class collections.abc.Callable ABCs for classes that provide respectively the methods

datetime.timestamp() Return POSIX timestamp corresponding to the datetime instance. The return value is a

array.append(x) Append a new item with value x to the end of the array.

array.tobytes() Convert the array to an array of machine values and return the bytes representation (the same sequence of bytes

heapq.heappushpop(heap, item) Push item on the heap, then pop and return the smallest item from the heap.

timedelta.resolution The smallest possible difference between non-equal timedelta objects, timedelta(microseconds=1)

count(x) Count the number of deque elements equal to x.

weakref.ReferenceType The type object for weak references objects.

bisect.bisect(a, x, lo=0, hi=len(a)) Similar to bisect_left(), but returns an insertion point which comes after

clear() Remove all elements from the deque leaving it with length 0.