alt Hacker NewsDisclosure: I'm not intimately familiar with all this.
I think Perl5 was originally planned to be replaced by Perl6. Then Perl6 took much longer than anyone expected, and kinda ended up in a different place. Perl5 was re-anointed as the once-and-future Perl, and what had been Perl6 became Raku.
If I remember correctly, somewhere in the middle of all that there was talk of running Python (and other languages) on the new Perl6 VM.
The Rakudo implementation of the Raku Programming Language uses the MoarVM, which is pretty much a generic VM. All you need to do(TM) is write a grammar and associated actions to build the right bytecode out of the given Python source.