In Python, an iterable is an object that can be iterated over, meaning you can loop over its elements one at a time. An iterator is an object that produces the next value in a sequence or iterable when you call its __next__() method.
The key difference between an iterable and an iterator is that an iterable can be looped over multiple times, whereas an iterator can only be iterated over once. When you loop over an iterable, a new iterator object is created each time, allowing you to loop over the iterable multiple times.
In other words, an iterable is an object that provides an __iter__() method, which returns an iterator object, while an iterator is an object that provides a __next__() method, which returns the next value in the sequence.
Here is an example to illustrate the difference between an iterable and an iterator:
my_list = [1, 2, 3, 4, 5] # my_list is an iterable # We can loop over my_list multiple times because it is iterable for i in my_list: print(i) for j in my_list: print(j) # However, we cannot loop over an iterator more than once my_iterator = iter(my_list) for k in my_iterator: print(k) for l in my_iterator: # This will not produce any output print(l)
In this example, my_list is an iterable object because it has an __iter__() method that returns an iterator object. We can loop over my_list multiple times because it is an iterable.
On the other hand, my_iterator is an iterator object that was created by calling the iter() function on my_list. When we loop over my_iterator the first time, it produces the output 1, 2, 3, 4, 5. However, when we try to loop over it again, it does not produce any output because we have already reached the end of the sequence.
In summary, an iterable is an object that can be looped over, while an iterator is an object that produces the next value in a sequence when you call its __next__() method.
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