[PySide] Detecting which framework (PyQt or PySide) is active

[David García Garzón]

Hi, i am working on a CPython function i want to transparently run with either 
PyQt or PySide. It is a functions that builds an interface using C++ and then 
wraps it using either Sip (PyQt) or shiboken (PySide) in order to return it to 
python. The wrapping part was solved thanks to your help in a different thread 
but i still have the problem of knowing which wrapper i should use in a given 
situation.

Is there some state (function, singletons, globals...) i could check? I am 
thinking on the pyside created QApp or any PySide state it requires to be 
initializated.

Additional info: The library is split in two layers, a python and a C one, so 
it could be either api, but not in user code, so solution such as checking the 
imported modules are not convinient. If there is no api for that i am thinking 
in hacks like using PySide initializations required by QApp if any.

Any ideas?

David.