merge

doc/basic_tutorial/module.txt

@@ -80,7 +80,8 @@ represents an expression *result*.
 Here we declare a Method. The three arguments are as follow:
 
 * **inputs**: a list of input Variables
-* **outputs**: a list of output Variables
+* **outputs**: a list of output Variables, or ``None``. ``None`` is equivalent
+  to returning an empty list of outputs.
 * **updates**: a dictionary mapping member Variables to Variables.  When we
   call the function that this Method compiles to, it will replace (update) the
   values associated with the member Variables.

theano/compile/function_module.py

@@ -792,7 +792,6 @@ def function(inputs, outputs, mode=None, accept_inplace = False):
 
     """
     mode = mode if mode is not None else mode_module.default_mode
-    print >> sys.stderr, "INFO: compiling function with mode", mode
 
     inputs = map(convert_function_input, inputs)
     if outputs is None:

theano/compile/module.py

@@ -149,7 +149,6 @@ class Component(object):
         memo = {}
         self.allocate(memo)
         rval = self.build(mode, memo)
-        print >> sys.stderr, "INFO: compiling component with mode", mode
         return rval
 
     def make(self, *args, **kwargs):
@@ -348,6 +347,8 @@ class Method(Component):
 
         """
         super(Method, self).__init__()
+        if outputs is None:
+            outputs = []
         self.inputs = inputs
         self.outputs = outputs
         self.updates = dict(updates)