input: 
  def deleteDuplicates(list):
      """Deletes all duplicates in a given list of numbers.
      >>> deleteDuplicates([1, 2, 2, 3, 4, 4, 5])
      [1, 2, 3, 4, 5]
      >>> deleteDuplicates([10, 10, 20, 30, 30, 30, 40])
      [10, 20, 30, 40]
      """
      final_list = []
      for num in list:
          if num not in final_list:
              final_list.append(num)
      return final_list
  
output:     final_list = []
      for num in list:
          if num not in final_list:
              final_list.append(num)
      return final_list