Clearer exception message

Switched order of exception arguments to first say that there is a bad input in some position, before explaining why it is bad.

Clearer exception message
1e2b244d · Olivier Delalleau · c0b4926a · 1e2b244d
--- a/theano/compile/function_module.py
+++ b/theano/compile/function_module.py
@@ -537,7 +537,8 @@ class Function(object):
                    if self.name:
                        function_name += 'with name "'+self.name+'" '
                    #end if
-                    e.args = tuple(list(e.args)+["Bad input argument to "+function_name+" at index %d" % i])
+                    e.args = tuple(["Bad input argument to " + function_name +
+                                    " at index %d" % i] + list(e.args))
                    raise
                #end except
            #end if