input: Write a function to filter out the odd numbers from a given list. The function should return a list containing only the odd numbers. If the input list is empty, the function should return an empty list.
  assert filter_odd_numbers([1, 2, 3, 4, 5, 6])==[1, 3, 5]
  assert filter_odd_numbers([2, 4, 6, 8])==[]
  assert filter_odd_numbers([1, 3, 5, 7, 9])==[1, 3, 5, 7, 9]
  assert filter_odd_numbers([])==[]
output: def filter_odd_numbers(lst):
      return [num for num in lst if num % 2 != 0]