Use the qtpy abstraction layer for base PyQt imports
Motivation and Context
After https://github.com/slaclab/pydm/pull/380 PyDM now uses qtpy as its interface layer. There may be a day in which the PyDM interface layer is deprecated. This PR prepares us for this day if and when it should arise.
Description
Use the
qtpyabstraction layer for basePyQtimportsMotivation and Context
After https://github.com/slaclab/pydm/pull/380 PyDM now uses
qtpyas its interface layer. There may be a day in which thePyDMinterface layer is deprecated. This PR prepares us for this day if and when it should arise.How Has This Been Tested?
Existing test suite