Model/model_data/epc_attributes/LightingAttributes.py

import re
from model_data.epc_attributes.attribute_utils import clean_description
from model_data.utils import correct_spelling


class LightingAttributes:

    def __init__(self, description, averages):
        self.description: str = clean_description(description.lower())
        self.description = correct_spelling(self.description)
        self.averages = averages

    def process(self):

        description = self.description

        if 'no low energy lighting' in description:
            return {"low_energy_proportion": 0}

        if "all fixed outlets" in description:
            return {"low_energy_proportion": 1}

        if ('good lighting efficiency' in description) or ('excellent lighting efficiency' in description) or \
            ('below average lighting efficiency' in description):
            average = [
                x for x in self.averages if x["lighting-description"] == description
            ][0]["low-energy-lighting"]

            return {
                "low_energy_proportion": average
            }

        match = re.search(r'\d+', description)
        if match:
            proportion = int(match.group()) / 100.0
            return {
                "low_energy_proportion": proportion
            }

        raise NotImplementedError("Not handled this case - investigate me")