Remove more support for python < 2.6

theano/gof/sched.py

@@ -4,15 +4,15 @@ from theano.compat import cmp, defaultdict
 # {{{ http://code.activestate.com/recipes/578231/ (r1)
 # Copyright (c) Oren Tirosh 2012
 #
-# Permission is hereby granted, free of charge, to any person obtaining a copy of
-# this software and associated documentation files (the "Software"), to deal in
-# the Software without restriction, including without limitation the rights to
-# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
-# of the Software, and to permit persons to whom the Software is furnished to do
-# so, subject to the following conditions:
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
 #
-# The above copyright notice and this permission notice shall be included in all
-# copies or substantial portions of the Software.
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
 #
 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
@@ -30,6 +30,7 @@ def memodict(f):
             ret = self[key] = f(key)
             return ret
     return memodict().__getitem__
+
 # end of http://code.activestate.com/recipes/578231/ }}}
 
 

theano/tensor/opt_uncanonicalize.py

 """
-This file implement specialization optimization that break the canonization form of the graph.
-
-Currently there is problem with the order of optimization and the definition of definition of
-canonized graph.
-
-Right now there is a canonization optimization phase that try to make all equivalent graph
-identical. This is not always the case, but it do many of the basic stuff canonical. We
-need to extend the definition of canonization to make this true more often.
-
-The problem this file indent to fix in the future is that in the "Equilibrium" specialization
-optimization phase, there is optimization that request that the graph is canonical, some other
-request that this is not true, and some other that break the canonicalization for
-some optimization. As we can't control the order of those optimization, there is case that some
-optimization requesting a canonical graph won't be applied as optimization that break the
-canonicalization form of the graph executed before.
-
-To fix this, we need to split the specialization phase into a phase where optimization can't break the canonicalization form and one where this is allowed. This is also needed for the stabilized optimization phase, but as it happen before the specialization phase, this cause less problem.
-
-Also, we should make the fgraph refuse optimization that break the canonization of the graph in the optimizations phases where the graph is supposed to be canonical.
+This file implement specialization optimization that break the
+canonization form of the graph.
+
+Currently there is problem with the order of optimization and the
+definition of definition of canonized graph.
+
+Right now there is a canonization optimization phase that try to make
+all equivalent graph identical. This is not always the case, but it do
+many of the basic stuff canonical. We need to extend the definition of
+canonization to make this true more often.
+
+The problem this file indent to fix in the future is that in the
+"Equilibrium" specialization optimization phase, there is optimization
+that request that the graph is canonical, some other request that this
+is not true, and some other that break the canonicalization for some
+optimization. As we can't control the order of those optimization, there
+is case that some optimization requesting a canonical graph won't be
+applied as optimization that break the canonicalization form of the
+graph executed before.
+
+To fix this, we need to split the specialization phase into a phase
+where optimization can't break the canonicalization form and one where
+this is allowed. This is also needed for the stabilized optimization
+phase, but as it happen before the specialization phase, this cause less
+problem.
+
+Also, we should make the fgraph refuse optimization that break the
+canonization of the graph in the optimizations phases where the graph is
+supposed to be canonical.
 """
 
 # TODO: intelligent merge for mul/add