My book says that in a heap, a value at position i will be smaller than the values at positions 2*i and 2*i + 1. To test that, I ran this program: ---------- from heapq import * from random import shuffle
data = range(10) shuffle(data) heap = [] for n in data: heappush(heap, n) print heap heappush(heap, .5) print heap -----output:------ [0, 1, 3, 4, 2, 6, 7, 9, 8, 5] [0, 0.5, 3, 4, 1, 6, 7, 9, 8, 5, 2] ---------- In the second heap, at position i=2 there is the value 3. At position 2*i=4, there is the value 1. 3 is not less than 1, which my book claims should be the case. -- http://mail.python.org/mailman/listinfo/python-list