Gstreamer get version from python ?

[Stuart Axon]

I'm using gst uninstalled on some pis.
Sometimes, it looks like they start using the system gstreamer instead of gstreamer uninstalled.
Basically set_window_handle becomes unavailable.

Is there a way to check the version, so I can verify this is what is happening ? 

I have this bit of code
def on_sync_message(bus, msg):
    if msg.get_structure().get_name() == 'prepare-window-handle':
        _sink = msg.src
        _sink.set_window_handle(win_handle)And after some amount of hours it starts failing.


I run the pis for hours they will randomly start not having set_window_handle

S++
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