In a message of Wed, 17 Jun 2015 07:52:46 -0000, Velummaylum Kajenthiran via Tu tor writes:
Dear Sir/MadamI know the difference between static and dynamic linking in C or C++. But what does it mean this in Python? Since it's just an interpreter, and only having one style of import mechanism of modules, how this make sense?If I freeze my python application with PyInstaller, Is it a kind of dynamic linking? Because, users can replace that library by themselves in order to run my application with different versions of libraries.What would be the meaning for this, if I freeze this as one file exe? In this case, users can not replace the dlls in order to run my app with different versions of PySide libraries.Actually my problems is, I'm using PySide library (with LGPL v2.1) to develop python GUI application. Library says, I should dynamically link to library to obey their legal terms (same as Qt). In this case, how do I link PySide dynamically? >_______________________________________________ >Tutor maillist - Tutor@python.org >To unsubscribe or change subscription options: >https://mail.python.org/mailman/listinfo/tutor You need to ask this question here: http://lists.qt-project.org/mailman/listinfo/pyside because all that matters is what the pyside people think. And, should you ever get into legal trouble, and have to go to court, what you need is evidence that this didn't violate the Pyside license agreement according to the Pyside people. What we on the tutor mailing list think will not count. Our company uses PyQt for lots of our commercial apps -- all the ones that aren't web based. About 12 years ago we asked that very question in paper mail to Trolltech (who owned QT at the time). We got the answer 'If you use PyInstaller you will be fine with us. Don't use py2exe.' Somewhere in a fireproof safe at work with 'documents we could not stand to lose even if the building burned down' we have that piece of paper. By all means do not get into discussing whether PyInstaller does or does not make dynamic or static links. This is an engineering question, and most engineers would say 'static', but that is irrelevant to your problem. Your problem is not an engineering one, but a legal one. Legal arguments work better when they have something to do with the truth, but _That is Not a Requirement_. Should you ever be unfortunate enough to be sued, and enemy lawyers come by demanding stuff, the argument that 'I have the truth on my side' will be greeted with gales of laughter. 'Of course you do', they will agree. 'But all that matters is that we can win this one in court. And here is the list of 5 of your competitors who have had to pay up when they lost the lawsuit even though they had the truth on their side too.' So, go get permission from the place that it really matters. What engineers think isn't worth the price of a cup of coffee. I suggest you get it, on paper, in writing by requesting such a thing from Digia (who are the latest in the long list of people who own QT) http://www.digia.com/ unless the Pyside mailing list steers you to some place else. Because the thing that stops lawyers, or at least slows them down, is not truth but documents signed by other lawyers saying that what you want to do is ok. Laura _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
