Added some changes to make vol.py compatible with Python 3.x

vol.py

@@ -115,9 +115,9 @@ def print_info():
     for c, n in sorted(categories.items()):
         lower = (c == commands.Command)
         plugins = registry.get_plugin_classes(c, lower = lower)
-        print "\n"
-        print "{0}".format(n)
-        print "-" * len(n)
+        print ("\n")
+        print ("{0}".format(n))
+        print ("-" * len(n))
 
         result = []
         max_length = 0
@@ -130,7 +130,7 @@ def print_info():
             max_length = max(len(clsname), max_length)
 
         for (name, doc) in result:
-            print "{0:{2}} - {1:15}".format(name, doc, max_length)
+            print ("{0:{2}} - {1:15}".format(name, doc, max_length))
 
 def main():
 
@@ -181,19 +181,19 @@ def main():
                 debug.error("Please specify a location (-l) or filename (-f)")
 
             command.execute()
-    except exceptions.VolatilityException, e:
-        print e
+    except exceptions.VolatilityException as e:
+        print (e)
 
 if __name__ == "__main__":
     config.set_usage(usage = "Volatility - A memory forensics analysis platform.")
     config.add_help_hook(list_plugins)
 
     try:
         main()
-    except Exception, ex:
+    except Exception as ex:
         if config.DEBUG:
             debug.post_mortem()
         else:
             raise
     except KeyboardInterrupt:
-        print "Interrupted"
+        print ("Interrupted")