def _get_op_name(op, special):
    """
    Find the name to attach to this method according to conventions
    for special and non-special methods.

    Parameters
    ----------
    op : binary operator
    special : bool

    Returns
    -------
    op_name : str
    """
    opname = op.__name__.strip('_')
    if special:
        opname = '__{opname}__'.format(opname=opname)
    return opname
