SBTi.portfolio_aggregation

Module Contents

Classes

PortfolioAggregationMethod	The portfolio aggregation method determines how the temperature scores for the individual companies are aggregated
PortfolioAggregation	This class is a base class that provides portfolio aggregation calculation.

class SBTi.portfolio_aggregation.PortfolioAggregationMethod

Bases: enum.Enum

The portfolio aggregation method determines how the temperature scores for the individual companies are aggregated into a single portfolio score.

WATS = WATS

TETS = TETS

MOTS = MOTS

EOTS = EOTS

ECOTS = ECOTS

AOTS = AOTS

ROTS = ROTS

static is_emissions_based(method: PortfolioAggregationMethod) → bool

Check whether a given method is emissions-based (i.e. it uses the emissions to calculate the aggregation).

Parameters

method – The method to check

Returns

static get_value_column(method: PortfolioAggregationMethod, column_config: Type[SBTi.configs.ColumnsConfig]) → str

class SBTi.portfolio_aggregation.PortfolioAggregation(config: Type[SBTi.configs.PortfolioAggregationConfig] = PortfolioAggregationConfig)

Bases: abc.ABC

This class is a base class that provides portfolio aggregation calculation.

Parameters

config – A class defining the constants that are used throughout this class. This parameter is only required if you’d like to overwrite a constant. This can be done by extending the PortfolioAggregationConfig class and overwriting one of the parameters.

_check_column(self, data: pandas.DataFrame, column: str)

Check if a certain column is filled for all companies. If not throw an error.

Parameters

• data – The data to check

• column – The column to check

Returns

_calculate_aggregate_score(self, data: pandas.DataFrame, input_column: str, portfolio_aggregation_method: PortfolioAggregationMethod) → pandas.Series

Aggregate the scores in a given column based on a certain portfolio aggregation method.

Parameters

• data – The data to run the calculations on

• input_column – The input column (containing the scores)

• portfolio_aggregation_method – The method to use

Returns

The aggregates score