iterators and iterable objects in Python?
In Python, an iterable object is an object with an __iter__ method, while an iterator is an object with both __next__ and __iter__ methods. Iterators are a special form of iterable objects, so any iterator is also an iterable object, but not all iterable objects are iterators.
When we use a for loop or the next() function to iterate over an iterable object, we are actually calling the iterable object’s __iter__ method to obtain an iterator, and then using the iterator’s __next__ method to sequentially retrieve the elements in the object. Therefore, iterators and iterable objects are interconnected, with iterators serving as tools for iterating over iterable objects.
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