Simplify with built-in functions where possible. e.g.

change [x for x in y if x] to filter(None, y)
change [f(x) for x in y] to map(f, x)
change [x for x in y] to list(y)

These changes reduce source code size and complexity and produce some minor performance gains

svn: r14104

src/Filters/Rules/Place/_HasPlace.py

@@ -62,7 +62,7 @@ class HasPlace(Rule):
             return False
 
         # If no location data was given then we're done: match
-        if not [item for item in self.list[1:] if item]:
+        if not any(self.list[1:]):
             return True
             
         # Something was given, so checking for location until we match