We will extend this idea to streams. Write a function called rle that takes in a stream of data, and returns a corresponding stream of two-element lists, which represents the run

def rle(data_stream ):

     with open( "data_stream" ) as file:

           container= [ ]

           two_itemlist= [ ]

           while True:

                 container.append( file.readlines )

           file.close( )

                 while container == True:

                         value= container.pop(0)

                         split_value= value.split( " " )

                         while split_value == True:

                              while len( two_itemlist) < 2:

                                    holder = split_value.pop( 0 )

                                    two_itemlist.append( holder )

                              yield two_itemlist

new_list = rle ( new_file )

Explanation:

In the solution above, the defined function is a generator, as it continuously returns a two-element list.