import clean up.

theano/scan_module/__init__.py

@@ -45,7 +45,6 @@ from theano import tensor
 from theano.tensor import opt, TensorType
 from theano import gof
 from theano.compile import optdb
-from theano import config
 
 import scan_op
 from scan import scan

theano/scan_module/scan.py

@@ -39,7 +39,6 @@ __contact__ = "Razvan Pascanu <r.pascanu@gmail>"
 import itertools
 import logging
 import numpy
-import warnings
 
 from theano.compile import SharedVariable, function
 from theano import compile
@@ -47,13 +46,12 @@ from theano import gof
 from theano.tensor import opt
 from theano import tensor
 from theano import config
+from theano.updates import Updates
+from theano.sandbox import cuda
 
 import scan_op
-from scan_op import safe_new, safe_to_cpu
 import scan_utils
 from scan_utils import safe_new, safe_to_cpu, traverse
-from theano.sandbox import cuda
-from theano.updates import Updates
 
 # Logging function for sending warning or info
 _logger = logging.getLogger('theano.scan_module.scan')

theano/scan_module/scan_op.py

@@ -12,32 +12,30 @@ __authors__ = ( "Razvan Pascanu "
 __copyright__ = "(c) 2010, Universite de Montreal"
 __contact__ = "Razvan Pascanu <r.pascanu@gmail>"
 
-import copy
 import itertools
 import logging
+import time
+
 import numpy
-import time, sys
 
-from theano.compile import SharedVariable, function, Param, Out
-from theano.compile.function_module import ViewOp, DeepCopyOp
+import theano
+from theano.compile import function, Param, Out
 from theano import compile
 from theano import gradient
-from theano.gof.python25 import all
+from theano.gof.python25 import any
 from theano.gof import Op, Apply
 from theano import gof
-from theano.misc import safe_asarray as safe_asarray
 from theano.tensor import TensorType
 from theano import tensor
 from theano.tensor.opt import Shape_i
-import theano
+from theano.sandbox import cuda
 
 import scan_utils
-from scan_utils import safe_new, safe_to_cpu, traverse
+from scan_utils import safe_new
 
 # Logging function for sending warning or info
 _logger = logging.getLogger('theano.scan_module.scan_op')
 
-from theano.sandbox import cuda
 
 class Scan(Op):
     #

theano/scan_module/scan_utils.py

@@ -11,30 +11,17 @@ __authors__ = ( "Razvan Pascanu "
 __copyright__ = "(c) 2010, Universite de Montreal"
 __contact__ = "Razvan Pascanu <r.pascanu@gmail>"
 
-import copy_reg
-import cPickle
-import itertools
 import logging
 import numpy
 
-import sys, time, copy
-
 from theano import config
-from theano.gof.python25 import partial
 from theano.compile.pfunc import rebuild_collect_shared
 from theano import gof
 from theano import tensor
 from theano.tensor.basic import get_constant_value
-from theano.gof import Op, Apply
-from theano.compile.io import *
-from theano.compile.function_module import Supervisor, view_tree_set, alias_root
-from theano.misc.safe_asarray import _asarray
-import theano.compile.mode as mode_module
-from theano.scalar import Scalar, ScalarVariable, ScalarConstant
 
 from theano.sandbox import cuda
 
-import theano
 
 ################ Utility Functions and Classes #######################