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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def peek_at(iterable: Iterable[T]) -> Tuple[T, Iterator[T]]: """Returns the first value from iterable, as well as a new iterator with the same content as the original iterable """

    gen = iter(iterable)
    peek = next(gen)
    return peek, itertools.chain([peek], gen)