In the section, Bands of a Triangular Lattice, in the MPB Python tutorial, the specification for the k_points is The K k_point, (-⅓, ⅓) does not correspond to the K point in the first Brillouin Zone ...
This does not seem to be an issue with Meep but rather with your version of autograd. The test fails here: int_types = {_np.int, _np.int8, _np.int16, _np.int32, _np.int64, _np.integer} - autograd is ...
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