Simplify list truthiness checks in parse_pieces

titles and suffixes are already lists; len(list(...)) just re-wraps
them. Use plain truthiness instead.

Author: derek73

nameparser/parser.py

@@ -1249,10 +1249,10 @@ def parse_pieces(self, parts: Iterable[str], additional_parts_count: int = 0) ->
                 suffixes = list(filter(self.is_suffix, period_chunks))
 
                 # register the part so it will be found by the is_* checks
-                if len(list(titles)):
+                if titles:
                     self._derived_titles.add(lc(part))
                     continue
-                if len(list(suffixes)):
+                if suffixes:
                     self._derived_suffixes.add(lc(part))
                     continue