I need help with my python programming assignment. I'm supposed to implement a stack using 2 queues. My professor sent detailed explanations that i will post below. I can't seem to get the method to convert the object in my class to a string representation. Any help would be appreciated with the assignment!

Queue PlistLR class Empty(Exception): "" "Error attempting to access an element from an empty container.""" pass Class Queue_PlistLR def __init__(self self, items = def isEmpty(self): return len(self, items) -0 def enqueue(self, item): self.items.appendCitem) def dequeue(self): if self.isEmptyO: raise Empty('Queue is empty') return self.items.pop(o def peek(self) if self.isEmptyO: raise Empty('Queue is empty') return self.items [0] def size(self) return len(self.items) def __str__(self): "" str-q for e in self.items: " str-q+=str(e)+" return str q.stripO) Queue PlistLR class Empty(Exception): "" "Error attempting to access an element from an empty container.""" pass Class Queue_PlistLR def __init__(self self, items = def isEmpty(self): return len(self, items) -0 def enqueue(self, item): self.items.appendCitem) def dequeue(self): if self.isEmptyO: raise Empty('Queue is empty') return self.items.pop(o def peek(self) if self.isEmptyO: raise Empty('Queue is empty') return self.items [0] def size(self) return len(self.items) def __str__(self): "" str-q for e in self.items: " str-q+=str(e)+" return str q.stripO)