[MacPorts] #64489: py-altair: add python310?

[MacPorts]

#64489: py-altair: add python310?
-------------------------+-----------------------
 Reporter:  jowens       |      Owner:  (none)
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:
 Keywords:               |       Port:  py-altair
-------------------------+-----------------------
 Please consider adding python310 to the list of supported pythons in py-
 altair (if it's supported, anyway).

-- 
Ticket URL: <https://trac.macports.org/ticket/64489>
MacPorts <https://www.macports.org/>
Ports system for macOS