def METHOD_NAME(
    cls, dirpath, num_products, ignore_small_balancing_corrections=True
):
    """
    Get an iterator in a given directory.
    Parameters
    ----------
    dirpath : str
        The path to the directory with the data.
    num_products : int
        The number of products.
    ignore_small_balancing_corrections : bool, optional
        Ignore small balancing corrections. By default True.    
    """
    dirpath = cls._get_path(dirpath)
    with (dirpath / "A.txt").open() as f:
        reader = csv.reader(f, delimiter="\t")
        locations = next(reader)[2:]
        names = [remove_numerics(o) for o in next(reader)[2:]]
        for line in tqdm(reader):
            inpt = (remove_numerics(line[1]), line[0])
            for index, elem in enumerate(line[2:]):
                if elem and float(elem) != 0:
                    if (
                        ignore_small_balancing_corrections
                        and abs(float(elem)) < 1e-15
                    ):
                        continue
                    else:
                        yield (inpt, (names[index], locations[index]), float(elem))