--- a/sat/tools/stream.py	Thu Mar 21 08:54:59 2019 +0100
+++ b/sat/tools/stream.py	Fri Mar 22 19:26:08 2019 +0100
@@ -37,6 +37,7 @@
 
         @return (D): deferred fired when stream is finished
         """
+        pass
 
 
 class SatFile(object):
@@ -44,17 +45,8 @@
 
     # TODO: manage "with" statement
 
-    def __init__(
-        self,
-        host,
-        client,
-        path,
-        mode="rb",
-        uid=None,
-        size=None,
-        data_cb=None,
-        auto_end_signals=True,
-    ):
+    def __init__(self, host, client, path, mode="rb", uid=None, size=None, data_cb=None,
+                 auto_end_signals=True):
         """
         @param host: %(doc_host)s
         @param path(str): path of the file to get
@@ -65,8 +57,10 @@
         @param size(None, int): size of the file (when known in advance)
         @param data_cb(None, callable): method to call on each data read/write
             mainly useful to do things like calculating hash
-        @param auto_end_signals(bool): if True, progressFinished and progressError signals are automatically sent
-            if False, you'll have to call self.progressFinished and self.progressError yourself
+        @param auto_end_signals(bool): if True, progressFinished and progressError signals
+            are automatically sent.
+            if False, you'll have to call self.progressFinished and self.progressError
+            yourself.
             progressStarted signal is always sent automatically
         """
         self.host = host