because all of the other variables were initialized so the complete code will looks like this class fishdef __init__(selfnamenoofeyes= last_name="fish")self name=name self noofeyes noofeyes self last_name last_name def swim(self)print("the fish is swimming "def swim_backwards(self)print("the fish can swim backwards "class goldfish(fish)pass gf goldfish("terry"print(gf name gf last_name +"has ",gf noofeyes ,"eyes"gf swim(gf swim_backwards(outputterry fish has eyes the fish is swimming the fish can swim backwards nextlet' create another child class called clownfish that includes its own method its special method will permit it to live with sea anemoneclass clownfish(fish)def live_with_anemone(self)print("the clownfish is coexisting with sea anemone "so the complete code will look like as follows page