Oh good. Glad my last reply was actually helpful to your goal. 
That is definitely the best route, I think, out of your options.. to just run 
your readMayaFile.py script directly with parameters, and get back results. 
Maybe like this:

mayapy readMayaFile.py --cameras </path/to/scene.ma>

You could even make it more generic as a utility and have different options as 
the return type:

mayapy readMayaFile.py --cameras --pickle </path/to/scene.ma>
mayapy readMayaFile.py --cameras --json -o out.json </path/to/scene.ma>

Then what you have is a general scene file parser.



On Dec 7, 2012, at 6:25 AM, san wrote:

> as a part of my learning PyQt4 I started making a gui(see attachment) where I 
> implement all the examples I learn from video tuts or book I am referring,
> 
> however I count figure out how should I implement the method to show text 
> message on the status bar when user hover mouse over a widget[link to 
> pastebin ]
> 
> and secondly I dont understand how come this method to select Directory is 
> not working?
> 
>     def showDirDialog(self):
>         directory=os.path.expanduser('~')
>         dirPath=QtGui.QFileDialog(self,"Select Render Directory",directory)
>         dirPath.setFileMode(QtGui.QFileDialog.DirectoryOnly)
> 
> 
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