Package for fast plotting of many data points in Python?

[Roy Smith]

In article 
<0734dc45-d8a0-4f28-b945-f9e179f30f5c at h11g2000yqb.googlegroups.com>,
 tt-industries <mail.to.daniel.platz at googlemail.com> wrote:

> I am programming a oscilloscope module in Python.

Sigh.  I guess I'm showing my age, but I still can't get used to the idea 
that the right tool to build an oscilloscope is no longer a soldering iron.