input: 
  from typing import List
  
  def deleteDuplicates(numbers: List[int]) -> List[int]: 
      """ Deletes all duplicates in a given list of numbers and returns a list with unique elements.
      >>> deleteDuplicates([1, 2, 2, 3, 4, 4, 5])
      [1, 2, 3, 4, 5]
      >>> deleteDuplicates([10, 20, 30, 20, 40])
      [10, 20, 30, 40]
      """
      final_list = [] 
      for num in numbers: 
          if num not in final_list: 
              final_list.append(num) 
      return final_list
  
output:     final_list = [] 
      for num in numbers: 
          if num not in final_list: 
              final_list.append(num) 
      return final_list