input: Write a function to remove duplicate entries from a list by iterating through the list and appending only unique elements to a new list. Return the new list containing only unique elements.
  def removeDuplicates(input): 
      final_list = [] 
      for num in input: 
          if num not in final_list: 
              final_list.append(num) 
      return final_list 
  assert removeDuplicates([1,2,2,3,3,4])==[1, 2, 3, 4]
  assert removeDuplicates([5,5,5,5,5])==[5]
  assert removeDuplicates([])==[]
  assert removeDuplicates([1,2,3,4,5])==[1, 2, 3, 4, 5]
  assert removeDuplicates([3,1,2,3,2,1])==[3, 1, 2]
output: def removeDuplicates(input): 
      final_list = [] 
      for num in input: 
          if num not in final_list: 
              final_list.append(num) 
      return final_list