def maybe_infer_dtype_type(element):
    """Try to infer an object's dtype, for use in arithmetic ops

    Uses `element.dtype` if that's available.
    Objects implementing the iterator protocol are cast to a NumPy array,
    and from there the array's type is used.

    Parameters
    ----------
    element : object
        Possibly has a `.dtype` attribute, and possibly the iterator
        protocol.

    Returns
    -------
    tipo : type

    Examples
    --------
    >>> from collections import namedtuple
    >>> Foo = namedtuple("Foo", "dtype")
    >>> maybe_infer_dtype_type(Foo(np.dtype("i8")))
    numpy.int64
    """
    tipo = None
    if hasattr(element, 'dtype'):
        tipo = element.dtype
    elif is_list_like(element):
        element = np.asarray(element)
        tipo = element.dtype
    return tipo