Note the namespace method works based on a search
myModules = [m for _,m,_ in pkgutil.iter_modules(demo_reader.compressed.__path__)]
The namespace "demo_reader.compressed" has a path and that path is used to produce a map of extension modules
The following sets up the extension map when demo_reader.compressed namespace is iterated over.
def iter_namespace(ns_pkg):
return pkgutil.iter_modules(
ns_pkg.__path__,
ns_pkg.__name__ + ".")
compression_plugins = {
importlib.import_module(module_name)
for _, module_name, _
in iter_namespace(
demo_reader.compressed)
}
extension_map = {
module.extension: module.opener
for module in compression_plugins
}