python iter() method returns the iterator object, it is used to convert an iterable to the iterator.

In Python, iter() is a built-in method that returns an iterator object. An iterator is an object that produces a stream of values, one at a time, when the next() method is called on it. Iterators are commonly used in Python to iterate over sequences, such as lists, tuples, and strings, and to iterate over the keys or values of a dictionary.

The iter() method takes an iterable object as its argument, such as a list, tuple, string, or dictionary. It returns an iterator object that can be used to iterate over the elements of the iterable.

For example, suppose you have a list of numbers: 

my_list = [1, 2, 3, 4, 5]

You can create an iterator object for this list using the iter() method: 

my_iterator = iter(my_list)

You can then use the next() method on the iterator to retrieve the next element in the sequence: 

print(next(my_iterator)) # prints 1
print(next(my_iterator)) # prints 2
print(next(my_iterator)) # prints 3

You can continue calling next() on the iterator to retrieve the remaining elements of the sequence. When there are no more elements to retrieve, the next() method raises the StopIteration exception.

Iterators provide a way to iterate over large or infinite sequences of data without having to store all of the data in memory at once. They can be used to process data in a memory-efficient way, and are a fundamental part of many Python libraries and frameworks.