input: Write a function to find the smallest number in a list.
  assert findSmallest([3, 5, 2, 1, 4]) == 1
  assert findSmallest([10, 20, 30, 5, 15]) == 5
  assert findSmallest([7, 7, 7, 7, 7]) == 7
output: def findSmallest(lst):
      return min(lst)