Understanding how to create a heap in Python

In Python 2.X and 3.x, heaps are supported through an importable library, heapq. It supplies numerous functions to work with the heap data structure modelled in a Python list.
Example:

>>> from heapq import heappush, heappop
>>> heap = []
>>> data = [1, 3, 5, 7, 9, 2, 4, 6, 8, 0]
>>> for item in data:
        heappush(heap, item)

>>> ordered = []
>>> while heap:
        ordered.append(heappop(heap))

>>> ordered
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> data.sort()
>>> data == ordered
True

You can find out more about Heap functions: heappush, heappop, heappushpop, heapify, heapreplace in heap python docs.