Why doesn't Python include non-blocking keyboard input function?

[Paul Rubin]

Terry Reedy <tjreedy at udel.edu> writes:
> Today, ethernet-connected *nix servers have no
> keyboard, mouse, or even a directly connected terminal.

Usually you ssh into them and connect to a pty which supports the same
ioctls that a real terminal would.  I use screen editors over ssh all
the time, not to mention filters like "more" where you press the space
bar to scroll to the next page.  It's sad that there's no easy way to do
that in Python.