Creating a tumbling windows in python

Question

Just wondering if there is a way to construct a tumbling window in python. So for example if I have list/ndarray , listA = [3,2,5,9,4,6,3,8,7,9]. Then how could I f

Answer 1

If you want a one-liner, you can use list comprehension:

listA = [3,2,5,9,4,6,3,8,7,9]
listB=[max(listA[i:i+3]) for i in range(0,len(listA),3)]
print (listB)

it returns:

[5, 9, 8, 9]

Of course the codes can be written more dynamically: if you want a different window size, just change 3 to any integer.