traittypes: traittypes (trait types for numpy, scipy and others) traittypes: traittypes: traittypes provides a reference implementation of trait types for traittypes: common data structures used in the scipy stack such as numpy arrays, traittypes: pandas and xarray data structures which are out of the scope of the traittypes: main traitlets project but are a common requirement to build traittypes: applications with traitlets in combination with the scipy stack. traittypes: traittypes: traittypes: traittypes: