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Python functions to the fastest way to iterate over an iterator.
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Here is a Python function to the fastest way to iterate over an iterator

import itertools

def fastest_iter(iterable):
    """
    Returns an iterator that iterates over the iterable in the fastest way.

    >>> list(fastest_iter([1, 2, 3]))
    [1, 2, 3]
    """
    return iter(iterable)

# Enter the iterable
iterable = [1, 2, 3]

# Calling the function
iterable = fastest_iter(iterable)

# Printing the result
print(iterable)

#Example Output
# <list_iterator object at 0x7fde85d97250>

#Remember to inspect code for bugs.