def getInputStream(self):
        raise NotImplementedError
Get the py files which have been changed since rev.
dataset/ETHPy150Open rwl/muntjac/muntjac/terminal/gwt/server/abstract_communication_manager.py/IRequest.getInputStream--crossover with--dataset/ETHPy150Open hayd/pep8radius/pep8radius/vcs.py/VersionControl.get_filenames_diff