py: Fix some macros defines; cleanup some includes.
diff --git a/py/objfun.c b/py/objfun.c
index 3adf05e..5f95a01 100644
--- a/py/objfun.c
+++ b/py/objfun.c
@@ -44,6 +44,7 @@
 #if 0 // print debugging info
 #define DEBUG_PRINT (1)
 #else // don't print debugging info
+#define DEBUG_PRINT (0)
 #define DEBUG_printf(...) (void)0
 #endif