fix: convert arguments names that are keywords reserved by Python

modules/core/include/opencv2/core/bindings_utils.hpp

@@ -116,6 +116,12 @@ String dumpRange(const Range& argument)
     }
 }
 
+CV_WRAP static inline
+String testReservedKeywordConversion(int positional_argument, int lambda = 2, int from = 3)
+{
+    return format("arg=%d, lambda=%d, from=%d", positional_argument, lambda, from);
+}
+
 CV_WRAP static inline
 void testRaiseGeneralException()
 {