def struct_from_sgnum(sgnum: int,
scale: float,
lattice_vectors: Union[List[List[float]],
numpy.ndarray] = None,
init_coords: Union[List[List[float]],
numpy.ndarray] = None,
species: List[str] = None) -> IStructure:
if init_coords is None:
init_coords = [[0, 0, 0]]
if lattice_vectors is None:
lattice_vectors = [[0, 0, 1], [0, 1, 0], [1, 0, 0]]
if species is None:
species = ["Si"] * len(init_coords)
lattice = Lattice(
[x * scale for vector in lattice_vectors for x in vector])
structure = IStructure.from_spacegroup(sgnum, lattice, species,
init_coords)
return structure.get_primitive_structure()
