input: 
  def deleteDuplicates(list): 
      """Deletes all duplicates in a given list of numbers.
      
      >>> deleteDuplicates([1, 2, 3, 2, 4, 3])
      [1, 2, 3, 4]
      >>> deleteDuplicates([5, 5, 5, 5])
      [5]
      >>> deleteDuplicates([])
      []
      >>> deleteDuplicates([1, 1, 2, 2, 3, 3, 4, 4, 5, 5])
      [1, 2, 3, 4, 5]
      """
      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