CONSOLE_DEFAULT attributes are evaluated when a class is first importer (__new__). Because of this, if we want to change for example Connectivity_data.default = file(different_path), the console_defaults are still from the old reference.

Proposal:

class Connectivity(Type):

default = reader.File("zip_path")

region_labels = basic.StringArray(label="bla bla", default.read_data(name="centres.txt.bz2", usecols=(0,), dtype="string", field="region_labels"))

c = Connectivity()
c.default.load("different_zip_path", c)

reader.File().... will maintain inside a map between every field loaded through "read_data" method, thus being able to re-load from a different zip file.

A different implementation reader.Table should also be build, to be used when loading LookupTable attributes.