input: Write a python function to find the largest element in a list.
  assert find_large_element([10, 5, 20, 8, 9, 12]) == 20
  assert find_large_element([1, 2, 3, 4, 5]) == 5
  assert find_large_element([-10, -20, -30, -5, -1]) == -1
output: def find_large_element(lst):
      return max(lst)