Given a nested list of integers, implement an iterator to flatten it. Each element is either an integer, or a list -- whose elements may also be integers or other lists. By calling next repeatedly ...

" list_exam = ['a', 'b', 'c']\n", " list_exam_gen = (e for e in list_exam) # generation expression\n", " print(isinstance(list_exam_gen, types.GeneratorType)) # True ...