def __getitem__(self, spec_name):
        return self.attr_specs[spec_name]
See lfs.plugins.PriceCalculator
dataset/ETHPy150Open bokeh/bokeh/bokeh/charts/data_source.py/DataGroup.__getitem__--crossover with--dataset/ETHPy150Open diefenbach/django-lfs/lfs/catalog/models.py/Product.get_base_price_gross