Paul Boddie paul at
Mon Mar 31 17:14:23 CEST 2008

On 31 Mar, 09:36, Duncan Booth < at invalid.invalid> wrote:
> I don't have a printed copy, but Google Books has it (not sure which
> edition I found) and page xix says:
> Given the nature of the cookbook, we wanted the recipes to be usable under
> any circumstances where Python could be used. In other words, we wanted to
> ensure completely unfettered use, in the same spirit as the Python license.
> Unfortunately, the Python license cannot really be used to refer to
> anything other than Python itself. As a compromise, we chose to use the
> modified Berkeley license, which is considered the most liberal of
> licenses. ... and then the license follows ...
> So, if the recipe is in the printed cookbook the licensing is clear
> (primarily you must retain the copyright notice).

The best advice I've found so far is the following:

It spells out exactly what you have to do to satisfy the original
licence and to uphold your own licence choice. It's also written by
well-regarded legal people.


P.S. An older and more ambiguous conclusion on the topic can be found

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