bw2data.meta

Module Contents

Classes

CalculationSetups	A dictionary for calculation setups.
Databases	A dictionary for database metadata. This class includes methods to manage database versions. File data is saved in databases.json.
DynamicCalculationSetups	A dictionary for Dynamic calculation setups.
GeoMapping	A dictionary that maps location codes to integers. Needed because parameter arrays have integer geo fields.
Mapping	A dictionary that maps object ids, like ("Ecoinvent 2.2", 42), to integers. Needed because parameter arrays have integer row and column fields.
Methods	A dictionary for method metadata. File data is saved in methods.json.
NormalizationMeta	A dictionary for normalization metadata. File data is saved in methods.json.
Preferences	A dictionary of project-specific preferences.
WeightingMeta	A dictionary for weighting metadata. File data is saved in methods.json.

Attributes

calculation_setups
databases
dynamic_calculation_setups
geomapping
mapping
methods
normalizations
preferences
weightings

class bw2data.meta.CalculationSetups(dirpath=None)

Bases: bw2data.serialization.PickledDict

A dictionary for calculation setups.

Keys: * inv: List of functional units, e.g. [{(key): amount}, {(key): amount}] * ia: List of LCIA methods, e.g. [(method), (method)].

filename = 'setups.pickle'

class bw2data.meta.Databases(dirpath=None)

Bases: bw2data.serialization.SerializedDict

A dictionary for database metadata. This class includes methods to manage database versions. File data is saved in databases.json.

filename = 'databases.json'

clean()

increment_version(database, number=None)

Increment the database version. Returns the new version.

set_dirty(database)

set_modified(database)

version(database)

Return the database version

class bw2data.meta.DynamicCalculationSetups(dirpath=None)

Bases: bw2data.serialization.PickledDict

A dictionary for Dynamic calculation setups.

Keys: * inv: List of functional units, e.g. [{(key): amount}, {(key): amount}] * ia: Dictionary of orst case LCIA method and the relative dynamic LCIA method, e.g. `` [{dLCIA_method_1_worstcase:dLCIA_method_1 , dLCIA_method_2_worstcase:dLCIA_method_2}]``.

filename = 'dynamicsetups.pickle'

class bw2data.meta.GeoMapping(*args, **kwargs)

Bases: Mapping

A dictionary that maps location codes to integers. Needed because parameter arrays have integer geo fields.

File data is stored in geomapping.pickle.

This dictionary does not support setting items directly; instead, use the add method to add multiple keys.

filename = 'geomapping.pickle'

class bw2data.meta.Mapping(dirpath=None)

Bases: bw2data.serialization.PickledDict

A dictionary that maps object ids, like ("Ecoinvent 2.2", 42), to integers. Needed because parameter arrays have integer row and column fields.

File data is saved in mapping.pickle.

This dictionary does not support setting items directly; instead, use the add method to add multiple keys.

filename = 'mapping.pickle'

add(keys)

Add a set of keys. These keys can already be in the mapping; only new keys will be added.

Parameters

keys (*) – The keys to add.

delete(keys)

Delete a set of keys.

Parameters

*keys* (list) – The keys to delete.

class bw2data.meta.Methods(dirpath=None)

Bases: bw2data.serialization.CompoundJSONDict

A dictionary for method metadata. File data is saved in methods.json.

filename = 'methods.json'

class bw2data.meta.NormalizationMeta(dirpath=None)

Bases: Methods

A dictionary for normalization metadata. File data is saved in methods.json.

filename = 'normalizations.json'

class bw2data.meta.Preferences(*args, **kwargs)

Bases: bw2data.serialization.PickledDict

A dictionary of project-specific preferences.

filename = 'preferences.pickle'

class bw2data.meta.WeightingMeta(dirpath=None)

Bases: Methods

A dictionary for weighting metadata. File data is saved in methods.json.

filename = 'weightings.json'

bw2data.meta.calculation_setups

bw2data.meta.databases

bw2data.meta.dynamic_calculation_setups

bw2data.meta.geomapping

bw2data.meta.mapping

bw2data.meta.methods

bw2data.meta.normalizations

bw2data.meta.preferences

bw2data.meta.weightings