code: def pop_scope(self):
          
          child_scope = self.stack.current.current.copy()
          self.stack.current.pop()
          parent_scope = self.stack.current.current.copy()
          self.stack.current.current = {
              key: child_scope[key] for key in child_scope if key in parent_scope
          }
docs: Delete the current scope in the current scope.