input: Write a python function to find the index of the farthest zero from the beginning of a list.
  assert farthest_from_begining_index([1, 0, 2, 0, 3, 0, 4]) == 5
  assert farthest_from_begining_index([0, 1, 2, 3, 4]) == 0
  assert farthest_from_begining_index([1, 2, 3, 4, 5]) == 0
output: def farthest_from_begining_index(lst):
      farthest_index = -1
      for i in range(len(lst)):
          if lst[i] == 0:
              farthest_index = i
      return farthest_index if farthest_index != -1 else 0