colour.colorimetry.SDS_BASIS_FUNCTIONS_CIE_ILLUMINANT_D_SERIES# colour.colorimetry.SDS_BASIS_FUNCTIONS_CIE_ILLUMINANT_D_SERIES = LazyCanonicalMapping({'S0': ..., 'S1': ..., 'S2': ...})# CIE Illuminant D Series \(S_n(\lambda)\) spectral distributions. References [Lin07], [WS00k]