[Paraview] Dialog box for Macros?

[Shuhao Wu]

Hello,

I would like to create a dialog box for my macro that takes a screenshot 
for each timestep. I want to be able to specify a file name prefix and 
the number of timesteps to screenshot. I can't figure out how to import 
PyQT (tried import PyQt4, PyQt5, PySide). Am I doing something wrong?

Thanks,
Shuhao