DataFactoryRegistry

class glue.config.DataFactoryRegistry

Bases: Registry

Stores data factories. Data factories take filenames as input, and return Data instances

The members property returns a list of (function, label, identifier, priority) namedtuples:

• Function is the factory that creates the data object

• label is a short human-readable description of the factory

• identifier is a function that takes (filename, **kwargs) as input and returns True if the factory can open the file

• priority is a numerical value that indicates how confident the data factory is that it should read the data, relative to other data factories. For example, a highly specialized FITS reader for specific FITS file types can be given a higher priority than the generic FITS reader in order to take precedence over it.

New data factories can be registered via:

@data_factory('label_name', identifier=identifier, priority=10)
def new_factory(file_name):
    ...

If not specified, the priority defaults to 0.

Methods Summary

__call__(label[, identifier, priority, ...])

This is provided so that registry instances can be used as decorators.

Methods Documentation

__call__(label, identifier=None, priority=None, default='', deprecated=False)

This is provided so that registry instances can be used as decorators. The decorators should add the decorated code object to the registry, and return the original function