[PyQt] licensing

Phil Thompson phil at riverbankcomputing.com
Thu Jun 23 09:33:20 BST 2011


On Wed, 22 Jun 2011 10:35:40 +0200, "KONTRA, Gergely"
<pihentagy at gmail.com>
wrote:
> Hi all!
> 
> Maybe a bit offtopic and theoretical question:
> 
> Suppose I'd like to write an app in python and Qt. I evaluate the
> possibilities, and see, that pyqt is more stable now, so I decide to
> begin coding with it (with the free version). When I make this
> decision, I already think to wait for a more complete/stable PySide
> binding and distribute my code which uses PySide (with a less
> restrictive license). Or I first release it with PyQt, but later on I
> find PySide, which has a less restrictive license.
> Is any of the above cases the violation of the License Terms? So is it
> legal? Is it fair?
> 
> And consider another case: I begin to write my app with Pyside, and
> later release a version with pyqt at some point. Can I later release a
> newer PySide based version with license compatible with PySide (which
> is not compatible with pyqt's license)?
> 
> Yet another case: I do a prototype with PyQt, and than hand-convert it
> to Qt/C++.

You haven't said what license you want to use for your code. If you use
the GPL version of PyQt then your license must be compatible with the GPL.

Phil


More information about the PyQt mailing list