python/lib/generator.py: prepare for python3

diff --git a/python/lib/generator.py b/python/lib/generator.py
index 90c145d..cf164a9 100755 (executable)
--- a/python/lib/generator.py
+++ b/python/lib/generator.py
@@ -23,6 +23,7 @@ def get_cpp_objects():
           i += 1
 
   typedefs = filter(lambda y: y.startswith ('typedef struct _aubio'), cpp_output)
+  typedefs = list(typedefs)
 
   cpp_objects = [a.split()[3][:-1] for a in typedefs]