On Thu, May 19, 2016, at 07:02 PM, gst wrote: > Python 4.0 ? My son will thank us ! No, he won't, because while Python 4.0 will happen, likely after Python 3.9, it will not be a major backwards compatible breaking point. Some people infer that because 3.0 was, 4.0, 5.0, 6.0 are open to it. They aren't. -- Stephen Hansen m e @ i x o k a i . i o