codetools.contexts.adapter.unit_manipulation_adapter.UnitManipulationAdapter

Bi-directional unit conversion of values. This adapter converts values to a different unit system based on their name. There is a name->units mapper for getitem conversions and a separate name->units adapter for setitem conversions so that read/write can result in different unit conversions. This is useful when, for example, you want a context to preserve its current units for all its variables, but something using this context ( a shell or plot, or whatever) wants the values in another unit system. If units aren't found for a particular name, the converter silently lets the variable pass through. If units are found, but a converter isn't, or the converter fails, a ConversionError is raised. Users can pass in a dictionary of converters functions to be used for unit conversion.