added better error msg when we pass to many arguments to theano fct.

theano/compile/function_module.py

@@ -443,6 +443,9 @@ class Function(object):
         for c in self.input_storage:
             c.provided = 0
 
+        if len(args)+len(kwargs)>len(self.input_storage):
+            raise TypeError("Too many parameter passed to theano function")
+
         # Set positional arguments
         i = 0
         for arg in args:

theano/compile/tests/test_function_module.py

@@ -41,6 +41,11 @@ class T_function(unittest.TestCase):
         fn = function([], []) #ok
         self.failUnless(fn() == [])
 
+    def test_extra_inputs(self):
+        x,s = T.scalars('xs')
+        fn = function([x], [x])
+        self.failUnlessRaises(TypeError,fn,1,2)
+        
     def test_missing_inputs(self):
 
         MissingInputException = TypeError