Fill in the Blanks Tad pilas función pythonOnline version TAD pilas función python by María Dolores 1 Lage Veiga 1 add_last is_empty super is_empty add_first super is_empty PositionalList LinkedPositionalList e __init__ delete e first class StackB ( / ) : def_init ( self ) : ( ) . ( ) def pushBottom ( self , e ) : self . ( ) def push ( self , e ) : self . ( ) def pop ( self ) : if not self . ( ) : return ( self . ( self . ( ) ) ) #o no definir ya que se hereda def ( self ) : return ( ) . ( )