#2503 make singletons compared with "is" not == or !=

Thanks to Wummel for the patch

5 files changed, 12 insertions, 12 deletions

diff --git a/Mac/BuildScript/build-installer.py b/Mac/BuildScript/build-installer.py
index 8bdebe6..37974e9 100755
--- a/Mac/BuildScript/build-installer.py
+++ b/Mac/BuildScript/build-installer.py
@@ -289,7 +289,7 @@ def runCommand(commandline):
     fd = os.popen(commandline, 'r')
     data = fd.read()
     xit = fd.close()
-    if xit != None:
+    if xit is not None:
         sys.stdout.write(data)
         raise RuntimeError, "command failed: %s"%(commandline,)
 
@@ -300,7 +300,7 @@ def captureCommand(commandline):
     fd = os.popen(commandline, 'r')
     data = fd.read()
     xit = fd.close()
-    if xit != None:
+    if xit is not None:
         sys.stdout.write(data)
         raise RuntimeError, "command failed: %s"%(commandline,)
 
diff --git a/Mac/Demo/applescript/Disk_Copy/Utility_Events.py b/Mac/Demo/applescript/Disk_Copy/Utility_Events.py
index 172b408..3830753 100644
--- a/Mac/Demo/applescript/Disk_Copy/Utility_Events.py
+++ b/Mac/Demo/applescript/Disk_Copy/Utility_Events.py
@@ -26,7 +26,7 @@ class Utility_Events_Events:
         _subcode = 'SEL1'
 
         aetools.keysubst(_arguments, self._argmap_select_disk_image)
-        if _no_object != None: raise TypeError, 'No direct arg expected'
+        if _no_object is not None: raise TypeError, 'No direct arg expected'
 
         aetools.enumsubst(_arguments, 'SELp', _Enum_TEXT)
 
@@ -52,7 +52,7 @@ class Utility_Events_Events:
         _subcode = 'SEL2'
 
         aetools.keysubst(_arguments, self._argmap_select_DiskScript)
-        if _no_object != None: raise TypeError, 'No direct arg expected'
+        if _no_object is not None: raise TypeError, 'No direct arg expected'
 
         aetools.enumsubst(_arguments, 'SELp', _Enum_TEXT)
 
@@ -78,7 +78,7 @@ class Utility_Events_Events:
         _subcode = 'SEL3'
 
         aetools.keysubst(_arguments, self._argmap_select_disk_image_or_DiskScript)
-        if _no_object != None: raise TypeError, 'No direct arg expected'
+        if _no_object is not None: raise TypeError, 'No direct arg expected'
 
         aetools.enumsubst(_arguments, 'SELp', _Enum_TEXT)
 
@@ -104,7 +104,7 @@ class Utility_Events_Events:
         _subcode = 'SEL4'
 
         aetools.keysubst(_arguments, self._argmap_select_floppy_disk_image)
-        if _no_object != None: raise TypeError, 'No direct arg expected'
+        if _no_object is not None: raise TypeError, 'No direct arg expected'
 
         aetools.enumsubst(_arguments, 'SELp', _Enum_TEXT)
 
@@ -130,7 +130,7 @@ class Utility_Events_Events:
         _subcode = 'SEL5'
 
         aetools.keysubst(_arguments, self._argmap_select_disk)
-        if _no_object != None: raise TypeError, 'No direct arg expected'
+        if _no_object is not None: raise TypeError, 'No direct arg expected'
 
         aetools.enumsubst(_arguments, 'SELp', _Enum_TEXT)
 
@@ -156,7 +156,7 @@ class Utility_Events_Events:
         _subcode = 'SEL6'
 
         aetools.keysubst(_arguments, self._argmap_select_folder)
-        if _no_object != None: raise TypeError, 'No direct arg expected'
+        if _no_object is not None: raise TypeError, 'No direct arg expected'
 
         aetools.enumsubst(_arguments, 'SELp', _Enum_TEXT)
 
diff --git a/Mac/Tools/Doc/HelpIndexingTool/Standard_Suite.py b/Mac/Tools/Doc/HelpIndexingTool/Standard_Suite.py
index 4f6604c..0e62a02 100644
--- a/Mac/Tools/Doc/HelpIndexingTool/Standard_Suite.py
+++ b/Mac/Tools/Doc/HelpIndexingTool/Standard_Suite.py
@@ -103,7 +103,7 @@ class Standard_Suite_Events(Standard_Suite_Events):
         _subcode = 'crel'
 
         aetools.keysubst(_arguments, self._argmap_make)
-        if _no_object != None: raise TypeError, 'No direct arg expected'
+        if _no_object is not None: raise TypeError, 'No direct arg expected'
 
 
         _reply, _arguments, _attributes = self.send(_code, _subcode,
diff --git a/Mac/Tools/Doc/setup.py b/Mac/Tools/Doc/setup.py
index bd86a20..05c678f 100644
--- a/Mac/Tools/Doc/setup.py
+++ b/Mac/Tools/Doc/setup.py
@@ -175,10 +175,10 @@ class AHVDocInstall(Command):
                 ('root', 'root'))
 #               import pdb ; pdb.set_trace()
         build_cmd = self.get_finalized_command('build')
-        if self.build_dest == None:
+        if self.build_dest is None:
             build_cmd = self.get_finalized_command('build')
             self.build_dest = build_cmd.build_dest
-        if self.install_doc == None:
+        if self.install_doc is None:
             self.install_doc = os.path.join(self.prefix, DESTDIR)
         print 'INSTALL', self.build_dest, '->', self.install_doc
 
diff --git a/Mac/scripts/buildpkg.py b/Mac/scripts/buildpkg.py
index 7f635a0..ed5c88f 100644
--- a/Mac/scripts/buildpkg.py
+++ b/Mac/scripts/buildpkg.py
@@ -183,7 +183,7 @@ class PackageMaker:
 
         # set folder attributes
         self.sourceFolder = root
-        if resources == None:
+        if resources is None:
             self.resourceFolder = root
         else:
             self.resourceFolder = resources