myems / myems-normalization

                        common_end_datetime_utc = max(energy_hourly.keys())

    print("getting common time slot of energy values for all offline meters...")

    if common_start_datetime_utc is not None and common_start_datetime_utc is not None:

        if energy_offline_meter_hourly is not None and len(energy_offline_meter_hourly) > 0:

            for meter_id, energy_hourly in energy_offline_meter_hourly.items():

                if energy_hourly is None or len(energy_hourly) == 0:

                    common_start_datetime_utc = None

                    common_end_datetime_utc = None

                    break

                else:

                    if common_start_datetime_utc < min(energy_hourly.keys()):

                        common_start_datetime_utc = min(energy_hourly.keys())

                    if common_end_datetime_utc > max(energy_hourly.keys()):

                        common_end_datetime_utc = max(energy_hourly.keys())

    print("evaluating the equation with SymPy...")

    normalized_values = list()

                    common_end_datetime_utc = max(energy_hourly.keys())

    print("getting common time slot of energy values for all virtual meters...")

    if common_start_datetime_utc is not None and common_start_datetime_utc is not None:

        if energy_virtual_meter_hourly is not None and len(energy_virtual_meter_hourly) > 0:

            for meter_id, energy_hourly in energy_virtual_meter_hourly.items():

                if energy_hourly is None or len(energy_hourly) == 0:

                    common_start_datetime_utc = None

                    common_end_datetime_utc = None

                    break

                else:

                    if common_start_datetime_utc < min(energy_hourly.keys()):

                        common_start_datetime_utc = min(energy_hourly.keys())

                    if common_end_datetime_utc > max(energy_hourly.keys()):

                        common_end_datetime_utc = max(energy_hourly.keys())

    print("getting common time slot of energy values for all offline meters...")

    if common_start_datetime_utc is not None and common_start_datetime_utc is not None: