created new folder to put extractors

bob/learn/pytorch/extractor/__init__.py

+# see https://docs.python.org/3/library/pkgutil.html
+from pkgutil import extend_path
+__path__ = extend_path(__path__, __name__)
+
+# gets sphinx autodoc done right - don't remove it
+def __appropriate__(*args):
+  """Says object was actually declared here, an not on the import module.
+
+  Parameters:
+
+    *args: An iterable of objects to modify
+
+  Resolves `Sphinx referencing issues
+  <https://github.com/sphinx-doc/sphinx/issues/3048>`
+  """
+
+  for obj in args: obj.__module__ = __name__
+
+__appropriate__()
+
+__all__ = [_ for _ in dir() if not _.startswith('_')]

bob/learn/pytorch/extractor/image/__init__.py

+
+__all__ = [_ for _ in dir() if not _.startswith('_')]
+