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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 _fromiter(it, dtype, count, progress, log):
 """Utility function to load an array from an iterator."""

    if progress > 0:
        it = _iter_withprogress(it, progress, log)
    if count is not None:
        a = np.fromiter(it, dtype=dtype, count=count)
    else:
        a = np.fromiter(it, dtype=dtype)
    return a