neutral

neutral(attr="")

Filters the catalogue to species with a net charge of zero and returns either the Specie objects or a chosen attribute of each. Preserves the relative catalogue order of the surviving species.

Parameters

attr : str, optional

Name of a Specie attribute to extract. If given, returns that attribute value for each neutral species instead of the Specie object itself. Leave empty (default) to return the Specie objects.

Supported attributes are: charge elements exploded fidx index mass name serialized

Returns

Vector[Specie or any]

Neutral Specie objects in catalogue order, or the value of attr for each neutral species if attr was given.

Raises

ValueError

If attr is not a valid Specie attribute name.