list_pureness

from collections import deque


def best_list_pureness(any_list, rotate_count):
    best_pureness = 0
    best_rotation = 0
    rotation = 0
    any_list = deque(any_list)
    while rotation <= rotate_count:
        current_pureness = sum([idx * value for idx, value in enumerate(any_list)])
        if current_pureness > best_pureness:
            best_pureness = current_pureness
            best_rotation = rotation
        rotation += 1
        any_list.rotate(1)
    return f'Best pureness {best_pureness} after {best_rotation} rotations'


test = ([4, 3, 2, 6], 4)
result = best_list_pureness(*test)
print(result)
test = ([7, 9, 2, 5, 3, 4], 3)
result = best_list_pureness(*test)
print(result)
test = ([1, 2, 3, 4, 5], 10)
result = best_list_pureness(*test)
print(result)