Ensure we test None using is rather than ==.

volatility/framework/plugins/mac/bash.py

@@ -51,7 +51,7 @@ class Bash(plugins.PluginInterface, timeliner.TimeLinerInterface):
                 continue
 
             proc_layer_name = task.add_process_layer()
-            if proc_layer_name == None:
+            if proc_layer_name is None:
                 continue
 
             proc_layer = self.context.layers[proc_layer_name]

volatility/framework/plugins/windows/handles.py

@@ -84,7 +84,7 @@ class Handles(interfaces.plugins.PluginInterface):
             magic = self.find_sar_value()
 
             # is this the right thing to raise here?
-            if magic == None:
+            if magic is None:
                 raise AttributeError(
                     "Unable to find the SAR value for decoding handle table pointers (Is capstone installed?)")
 
@@ -121,7 +121,7 @@ class Handles(interfaces.plugins.PluginInterface):
                 return None
 
             data = self.context.layers.read(virtual_layer_name, kvo + func_addr, 0x200)
-            if data == None:
+            if data is None:
                 return None
 
             md = capstone.Cs(capstone.CS_ARCH_X86, capstone.CS_MODE_64)
@@ -252,7 +252,7 @@ class Handles(interfaces.plugins.PluginInterface):
 
                 item = self._get_item(entry, handle_value)
 
-                if item == None:
+                if item is None:
                     continue
 
                 try:
@@ -300,7 +300,7 @@ class Handles(interfaces.plugins.PluginInterface):
                 try:
                     self.context.layers[self.config["primary"]].is_valid(entry.vol.offset)
                     obj_type = entry.get_object_type(type_map, cookie)
-                    if obj_type == None:
+                    if obj_type is None:
                         continue
                     if obj_type == "File":
                         item = entry.Body.cast("_FILE_OBJECT")

volatility/framework/symbols/windows/extensions/__init__.py

@@ -240,7 +240,7 @@ class MMVAD_SHORT(objects.StructType):
             vollog.log(constants.LOGLEVEL_VVV, "Vad tree is too deep, something went wrong!")
             raise RuntimeError("Vad tree is too deep")
 
-        if visited == None:
+        if visited is None:
             visited = set()
 
         vad_address = self.vol.offset
@@ -624,7 +624,7 @@ class OBJECT_HEADER(objects.StructType):
             layer = self._context.layers[self.vol.native_layer_name]
             kvo = layer.config.get("kernel_virtual_offset", None)
 
-            if kvo == None:
+            if kvo is None:
                 raise AttributeError("Could not find kernel_virtual_offset for layer: {}".format(self.vol.layer_name))
 
             ntkrnlmp = self._context.module(symbol_table_name, layer_name = self.vol.layer_name, offset = kvo)

volatility/framework/symbols/windows/extensions/registry.py

@@ -110,7 +110,7 @@ class CM_KEY_BODY(objects.StructType):
         output = []
         kcb = self.KeyControlBlock
         while kcb.ParentKcb:
-            if kcb.NameBlock.Name == None:
+            if kcb.NameBlock.Name is None:
                 break
 
             if self._skip_key_hive_entry_path(kcb.Flags):