Python tips iterables vs iterators pt 1

sure! let's start with the basic concepts of iterables and iterators in python.

**iterables:**
an iterable is any python object capable of returning its members one at a time. examples of iterables include lists, tuples, strings, dictionaries, sets, and file objects. you can check if an object is iterable by using the `iter()` function. if an object is iterable, you can loop over its elements using a `for` loop.

**iterators:**
an iterator is an object representing a stream of data. it implements two methods, `__iter__()` and `__next__()`. the `__iter__()` method returns the iterator object itself and is used to initialize the iteration. the `__next__()` method returns the next item from the stream and is called each time you request an item from the iterator.

**difference between iterables and iterators:**
- an iterable is any object that can be looped over, while an iterator is an object that produces values one at a time.
- iterables can be iterated over multiple times, while iterators maintain internal state and can only be iterated over once.
- iterables have the `__iter__()` method, while iterators have both the `__iter__()` and `__next__()` methods.

**code example:**
let's demonstrate the difference between an iterable and an iterator using a list as an iterable and an iterator object.

in this example, we create a list `my_list`, convert it to an iterator `my_iterator` using the `iter()` function, and then demonstrate the difference between iterating over the list directly (iterable) and iterating over the iterator. you'll notice that trying to iterate over the list again results in an empty output because iterators can only be iterated over once.

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