The future of Python 3000 is now! As of January 2020 Python 2 will be in EOL (End Of Life) status and receive no further official support. After that date, there will be no further updates nor bugfixes. Since this end-of-life date has been planned for nearly a decade (the first end-of-life date was slated to happen in 2014, and was pushed back to 2020), and nearly all popular libraries have already ported their code, Python 2.x is well on its way out.
Previous page revisions have historical information that may be useful in porting or maintaining remaining Python 2 systems. If you need additional support in porting existing 2.x code to 3.x, please see the resources available for porting Python 2 code.