PL/Python is very unlikely to appear soon unfortunately because it is an untrusted language in PostgreSQL.
EDIT: you are right, PL/Python is supported as well. I only read the "Language Extensions :PL/Perl, PL/pgSQL, PL/Tcl" part at the top.
EDIT: you are right, PL/Python is supported as well. I only read the "Language Extensions :PL/Perl, PL/pgSQL, PL/Tcl" part at the top.
But I was surprise to not see PL/V8 which is sandboxed