Small changes

gof/op.py

@@ -17,7 +17,9 @@ __all__ = ['Op',
 
 
 def constructor(op_cls, name = None):
-    """Make an Op look like a L{Result}-valued function."""
+    """
+    Make an L{Op} look like a L{Result}-valued function.
+    """
     def f(*args, **kwargs):
         op = op_cls(*args, **kwargs)
         if len(op.outputs) > 1:

tensor.py

@@ -232,6 +232,7 @@ class Tensor(Result):
 
     dtype = property(lambda self: self._dtype, doc = "read-only access to _dtype, which should not be changed")
     broadcastable = property(lambda self: self._broadcastable, doc = "read-only access to _broadcastable, which should not be changed")
+    ndim = property(lambda self: len(self.broadcastable), doc = "read-only access to the number of dimensions")
 
     ############################
     # Cloning facilities