src.data_sources.annuity.product.baseΒΆ Namespace for annuity base product assumptions. Classes BaseProduct(path) Namespace for annuity base product assumptions. Modules src.data_sources.annuity.product.base.crediting_rate Namespace for annuity interest crediting. src.data_sources.annuity.product.base.surrender_charge Data source for the surrender charge table.