change import to the full path.

theano/compile/sandbox/__init__.py

-from .sharedvalue import shared, shared_constructor
-from .pfunc import pfunc
+from theano.compile.sandbox.sharedvalue import shared, shared_constructor
+from theano.compile.sandbox.pfunc import pfunc

theano/sandbox/debug.py

 
-from .. import gof
+from theano import gof
 import sys