treaps in python

[Robert Kern]

On 2009-12-14 22:49 PM, Dan Stromberg wrote:

> It's currently GPLv3-licensed, but I'd like to dual license it in such a
> way that it could eventually be included in the standard library. How
> would I go about this?

I would recommend simply using the Apache v2 license. The PSF will only accept 
code for the standard library under this license or the Academic Free License. 
There is no need or benefit to dual-licensing it with the Apache license and the 
GPLv3 as the GPLv3 is a strict superset of requirements. People writing GPLv3 
programs can incorporate your module without problems.

You *may* want to consider dual-licensing Apache v2/GPLv2 or another 
GPLv2-compatible license. There are some people sticking with GPLv2 and the 
patent peace provisions in the Apache v2 (compatible with those in GPLv3) are 
incompatible with the GPLv2.

Both of these dual-licensing scenarios are quite different from what people 
normally want to do when dual-licensing, which is to use a strong copyleft 
license like the GPL normally and sell individual commercial licenses on an ad 
hoc basis. This would not serve your purpose. I still recommend just licensing 
your code under the Apache v2 license and forgetting about dual-licensing until 
you get people asking for other licenses.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco