input: Write a python function to find the index of the largest element in a list.
  assert find_largest_index([1, 2, 3, 4, 5]) == 4
  assert find_largest_index([5, 4, 3, 2, 1]) == 0
  assert find_largest_index([1, 3, 5, 7, 9]) == 4
  assert find_largest_index([-1, -2, -3, -4, -5]) == 0
  assert find_largest_index([1, 1, 1, 1, 1]) == 0
output: def find_largest_index(lst):
      return lst.index(max(lst))