Add shortcut theano.change_flags and use it.

theano/__init__.py

@@ -65,6 +65,7 @@ def disable_log_handler(logger=theano_logger, handler=logging_default_handler):
 from theano.version import version as __version__
 
 from theano.configdefaults import config
+from theano.configparser import change_flags
 
 # This is the api version for ops that generate C code.  External ops
 # might need manual changes if this number goes up.  An undefined

theano/compile/builders.py

@@ -271,7 +271,7 @@ class OpFromGraph(gof.Op):
         is_inline = self.is_inline
         return '%(name)s{inline=%(is_inline)s}' % locals()
 
-    @theano.configparser.change_flags(compute_test_value='off')
+    @theano.change_flags(compute_test_value='off')
     def _recompute_grad_op(self):
         '''
         converts self._grad_op from user supplied form to type(self) instance
@@ -375,7 +375,7 @@ class OpFromGraph(gof.Op):
         self._grad_op_stypes_l = all_grads_ov_l
         self._grad_op_is_cached = True
 
-    @theano.configparser.change_flags(compute_test_value='off')
+    @theano.change_flags(compute_test_value='off')
     def _recompute_rop_op(self):
         '''
         converts self._rop_op from user supplied form to type(self) instance

theano/compile/debugmode.py

@@ -28,7 +28,7 @@ from theano.compile.function_module import (
     std_fgraph)
 from theano.compile.mode import Mode, register_mode
 from theano.compile.ops import OutputGuard, _output_guard
-from theano.configparser import change_flags
+from theano import change_flags
 
 
 __docformat__ = "restructuredtext en"

theano/compile/function_module.py

@@ -1829,7 +1829,7 @@ def orig_function(inputs, outputs, mode=None, accept_inplace=False,
                   on_unused_input=on_unused_input,
                   output_keys=output_keys,
                   name=name)
-        with theano.configparser.change_flags(compute_test_value="off"):
+        with theano.change_flags(compute_test_value="off"):
             fn = m.create(defaults)
     finally:
         t2 = time.time()

theano/compile/tests/test_builders.py

@@ -315,7 +315,7 @@ class T_OpFromGraph(unittest_tools.InferShapeTester):
                                  np.ones([3, 4], dtype=config.floatX)],
                                 OpFromGraph)
 
-    @theano.configparser.change_flags(compute_test_value='raise')
+    @theano.change_flags(compute_test_value='raise')
     def test_compute_test_value(self):
         x = T.scalar('x')
         x.tag.test_value = np.array(1., dtype=config.floatX)

theano/compile/tests/test_debugmode.py

@@ -284,7 +284,7 @@ def test_badoptimization_opt_err():
 
     # Test that opt that do an illegal change still get the error from gof.
     try:
-        with theano.configparser.change_flags(on_opt_error='raise'):
+        with theano.change_flags(on_opt_error='raise'):
             f2 = theano.function([a, b], a + b,
                                  mode=debugmode.DebugMode(optimizer=opt2,
                                                           stability_patience=1))

theano/gof/tests/test_destroyhandler.py

@@ -12,7 +12,7 @@ from theano.gof import destroyhandler
 from theano.gof.fg import FunctionGraph, InconsistencyError
 from theano.gof.toolbox import ReplaceValidate
 
-from theano.configparser import change_flags
+from theano import change_flags
 
 from copy import copy
 

theano/gof/tests/test_opt.py

@@ -571,7 +571,7 @@ class TestEquilibrium(object):
         opt.optimize(g)
         assert str(g) == '[Op2(x, y)]'
 
-    @theano.configparser.change_flags(on_opt_error='ignore')
+    @theano.change_flags(on_opt_error='ignore')
     def test_low_use_ratio(self):
         x, y, z = map(MyVariable, 'xyz')
         e = op3(op4(x, y))

theano/gof/type.py

@@ -12,10 +12,9 @@ from six import string_types
 
 import re
 import theano
-from theano.gof import utils
+from theano.gof import graph, utils
 from theano.gof.utils import MethodNotDefined, object2
-from theano.gof import graph
-from theano.configparser import change_flags
+from theano import change_flags
 
 ########
 # Type #

theano/gpuarray/tests/test_opt.py

@@ -283,7 +283,7 @@ class test_gpu_ifelse(test_ifelse.test_ifelse):
         z = tensor.constant(2.)
 
         a = theano.ifelse.ifelse(x, y, z)
-        with theano.configparser.change_flags(on_opt_error='raise'):
+        with theano.change_flags(on_opt_error='raise'):
             theano.function([x], [a], mode=mode_with_gpu)
 
 
@@ -516,7 +516,7 @@ def test_not_useless_scalar_gpuelemwise():
     # We don't want to move elemwise on scalar on the GPU when the
     # result will not be used on the GPU!
 
-    with theano.configparser.change_flags(warn_float64='ignore'):
+    with theano.change_flags(warn_float64='ignore'):
         X = tensor.fmatrix()
         x = np.random.randn(32, 32).astype(np.float32)
         m1 = theano.shared(np.random.randn(32, 32).astype(np.float32))

theano/gpuarray/tests/test_rng_mrg.py

@@ -4,8 +4,7 @@ import functools
 import numpy as np
 
 import theano
-from theano import tensor
-from theano.configparser import change_flags
+from theano import change_flags, tensor
 from theano.sandbox import rng_mrg
 from theano.sandbox.rng_mrg import MRG_RandomStreams
 from theano.sandbox.tests.test_rng_mrg import java_samples, rng_mrg_overflow

theano/gpuarray/tests/test_subtensor.py

@@ -123,7 +123,7 @@ def test_advinc_subtensor1_dtype():
         assert np.allclose(rval, rep)
 
 
-@theano.configparser.change_flags(deterministic='more')
+@theano.change_flags(deterministic='more')
 def test_deterministic_flag():
     shp = (3, 4)
     for dtype1, dtype2 in [('float32', 'int8')]:

theano/sandbox/rng_mrg.py

@@ -754,7 +754,7 @@ class MRG_RandomStreams(object):
         self.rstate = multMatVect(self.rstate, A1p134, M1, A2p134, M2)
         assert self.rstate.dtype == np.int32
 
-    @theano.configparser.change_flags(compute_test_value='off')
+    @theano.change_flags(compute_test_value='off')
     def get_substream_rstates(self, n_streams, dtype, inc_rstate=True):
         # TODO : need description for parameter and return
         """

theano/sandbox/tests/test_rng_mrg.py

@@ -9,14 +9,12 @@ import numpy as np
 from six.moves import xrange
 
 import theano
-from theano import tensor, config
+from theano import change_flags, config, tensor
 from theano.sandbox import rng_mrg
 from theano.sandbox.rng_mrg import MRG_RandomStreams
 from theano.tests import unittest_tools as utt
 from theano.tests.unittest_tools import attr
 
-from theano.configparser import change_flags
-
 # TODO: test MRG_RandomStreams
 # Partly done in test_consistency_randomstreams
 

theano/scan_module/tests/test_scan.py

@@ -2790,7 +2790,7 @@ class T_Scan(unittest.TestCase):
         utt.assert_allclose(expected_output, scan_output)
         utt.assert_allclose(expected_output, jacobian_outputs)
 
-    @theano.configparser.change_flags(on_opt_error='raise')
+    @theano.change_flags(on_opt_error='raise')
     def test_pushout_seqs2(self):
         # This test for a bug with PushOutSeqScan that was reported on the
         # theano-user mailing list where the optimization raised an exception
@@ -2807,7 +2807,7 @@ class T_Scan(unittest.TestCase):
         # an exception being raised
         theano.function([x], outputs, updates=updates)
 
-    @theano.configparser.change_flags(on_opt_error='raise')
+    @theano.change_flags(on_opt_error='raise')
     def test_pushout_nonseq(self):
         # Test case originally reported by Daniel Renshaw. The crashed occured
         # during the optimization PushOutNonSeqScan when it attempted to

theano/tensor/elemwise.py

@@ -8,7 +8,7 @@ from six.moves import xrange
 import theano
 from theano import gof
 from theano.compat import izip
-from theano.configparser import change_flags
+from theano import change_flags
 from theano.gof import Apply, Op, COp, OpenMPOp, ParamsType
 from theano import scalar
 from theano.scalar import get_scalar_type

theano/tensor/nnet/bn.py

@@ -14,7 +14,7 @@ from theano.scalar import add, sub, true_div, mul
 class BNComposite(Composite):
     init_param = ('dtype',)
 
-    @theano.configparser.change_flags(compute_test_value='off')
+    @theano.change_flags(compute_test_value='off')
     def __init__(self, dtype):
         self.dtype = dtype
         x = theano.scalar.Scalar(dtype=dtype).make_variable()

theano/tensor/nnet/tests/test_abstract_conv.py

@@ -6,7 +6,7 @@ from nose.tools import assert_raises, assert_true
 
 import theano
 from theano import tensor
-from theano.configparser import change_flags
+from theano import change_flags
 from theano.gof.opt import check_stack_trace
 from theano.tests import unittest_tools as utt
 from theano.tensor.nnet import (corr, corr3d, conv2d_transpose,

theano/tensor/nnet/tests/test_neighbours.py

@@ -8,7 +8,7 @@ import theano.tensor as T
 from theano.tensor.nnet.neighbours import images2neibs, neibs2images, Images2Neibs
 
 from theano.tests import unittest_tools
-from theano.configparser import change_flags
+from theano import change_flags
 
 mode_without_gpu = theano.compile.mode.get_default_mode().excluding('gpu')
 

theano/tensor/tests/test_basic.py

@@ -57,7 +57,7 @@ from theano.tensor import (
 
 from theano.tests import unittest_tools as utt
 from theano.tests.unittest_tools import attr
-from theano.configparser import change_flags
+from theano import change_flags
 
 imported_scipy_special = False
 mode_no_scipy = get_default_mode()

theano/tensor/tests/test_mpi.py

@@ -6,7 +6,7 @@ import subprocess
 import os
 from theano.gof.sched import sort_schedule_fn
 
-from theano.configparser import change_flags
+from theano import change_flags
 
 mpi_scheduler = sort_schedule_fn(*mpi_cmps)
 mpi_linker = theano.OpWiseCLinker(schedule=mpi_scheduler)

theano/tensor/tests/test_opt.py

@@ -63,7 +63,7 @@ from theano.tensor.elemwise import DimShuffle
 from theano.tensor.type import values_eq_approx_remove_nan
 from theano.tests import unittest_tools as utt
 from theano.gof.opt import check_stack_trace, out2in
-from theano.configparser import change_flags
+from theano import change_flags
 from nose.plugins.attrib import attr
 
 mode_opt = theano.config.mode

theano/tensor/tests/test_subtensor.py

@@ -34,7 +34,7 @@ from theano.tensor.subtensor import (AdvancedIncSubtensor,
 from theano.tensor.tests.test_basic import inplace_func, rand, randint_ranged
 from theano.tests import unittest_tools as utt
 from theano.tests.unittest_tools import attr
-from theano.configparser import change_flags
+from theano import change_flags
 
 if PY3:
     def L(i):