add __init__

.gitignore

@@ -16,3 +16,4 @@ results*
 build/
 record.txt
 *lightcnn*
+bob/learn/pytorch/preprocessor/audio/data

bob/learn/pytorch/extractor/audio/DltResNet.py

@@ -5,4 +5,24 @@ class DltResNetExtractor(Extractor):
   """ The Dummy class for passing the extracted embedding.
 
   """
-  pass
+  def __init__(self):
+    super(DltResNetExtractor, self).__init__()
+  
+  def __call__(self, data):
+    """__call__(data) -> feature
+
+    This function will actually perform the feature extraction.
+    It must be overwritten by derived classes.
+    It takes the (preprocessed) data and returns the features extracted from the data.
+
+    **Parameters**
+
+    data : object (usually :py:class:`numpy.ndarray`)
+      The *preprocessed* data from which features should be extracted.
+
+    **Returns:**
+
+    feature : object (usually :py:class:`numpy.ndarray`)
+      The extracted feature.
+    """
+    return data
\ No newline at end of file

bob/learn/pytorch/preprocessor/__init__.py

+# see https://docs.python.org/3/library/pkgutil.html
+from pkgutil import extend_path
+__path__ = extend_path(__path__, __name__)