Add additional typing information.

volatility/framework/automagic/nlpdtbfinder.py

@@ -96,7 +96,7 @@ class NlpDtbScanner(interfaces.layers.ScannerInterface):
 
     def __call__(self, data: bytes, data_offset: int) \
             -> typing.Generator[typing.Tuple[int, typing.List[typing.Tuple[int, int]]], None, None]:
-        structure = self._layer_class.structure
+        structure = self._layer_class.structure  # type: typing.List[typing.Tuple[str, int, bool]]
         name, size, large_page = structure[0]
 
         # Somewhat hacky means of determining which format string to use

volatility/framework/automagic/pdbscan.py

@@ -165,7 +165,7 @@ class KernelPDBScanner(interfaces.automagic.AutomagicInterface):
             if layer_name and virtual_layer_name:
                 memlayer = context.memory[virtual_layer_name]
                 if isinstance(memlayer, intel.Intel):
-                    page_size = memlayer.page_size
+                    page_size = memlayer.page_size  # type: int
                     results = {virtual_layer_name: scan(context,
                                                         layer_name,
                                                         page_size,

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

@@ -496,6 +496,7 @@ class _EPROCESS(generic.GenericIntelProcess, ExecutiveObject):
             raise TypeError("Parent layer is not a translation layer, unable to construct process layer")
 
         # Presumably for 64-bit systems, the DTB is defined as an array, rather than an unsigned long long
+        dtb = 0  # type: int
         if isinstance(self.Pcb.DirectoryTableBase, objects.Array):
             dtb = self.Pcb.DirectoryTableBase.cast("unsigned long long")
         else: