Python Software Foundation License
From Wikipedia, the free encyclopedia
The Python Software Foundation License (PSFL) is a BSD-style, free software licence which is compatible with the GNU General Public License (GPL). Its primary use is for distribution of the Python project software. Unlike the GPL the Python license is not a copyleft licence, thus modified versions can be distributed without making the modifications open source. The PSFL is listed as approved on both FSF's approved licences list, and OSI's approved licences list.
Early versions of this license were incompatible with the GPL. The reason given by Free Software Foundation was that "this Python license is governed by the laws of the 'State of Virginia', in the USA, and the GPL does not permit this."
The year that Python's creator Guido van Rossum changed the license to fix this incompatibility he was awarded the Free Software Foundation Award for the Advancement of Free Software.
