Fixed some typos

theano/configdefaults.py

@@ -136,10 +136,10 @@ AddConfigVar('nocleanup',
         BoolParam(False),
         in_c_key=False)
 
-# This flag is used when we import Theano to init global variable.
-# So changing it after import won't change those global variable.
-# This could be changed... but for now I do the fast fix to disable the
-# change at run time.
+# This flag is used when we import Theano to initialize global variables.
+# So changing it after import will not modify these global variables.
+# This could be done differently... but for now we simply prevent it from being
+# changed at runtime.
 AddConfigVar('tensor.cmp_sloppy',
         "Relax tensor._allclose (0) not at all, (1) a bit, (2) more",
         IntParam(0, lambda i: i in (0,1,2), allow_override=False),

theano/tensor/basic.py

@@ -1223,8 +1223,8 @@ class _tensor_py_operators:
     size = property(lambda self: prod(self.shape))
 
     # We can't implement __len__ to provide a better error message.
-    # Otherwise TensorVariable[:-1] don't work as Python 2.5.1 call
-    # __len__ before calling __getitem__. It also don't catch the raised
+    # Otherwise TensorVariable[:-1] does not work as Python 2.5.1 calls
+    # __len__ before calling __getitem__. It also does not catch the raised
     # Exception!
 #     def __len__(self):
 #         # We can't implement __len__ as Python requests that this