def get_filenames_diff(self, r):
cmd = self.filenames_diff_cmd(r)<EOL>diff_files = shell_out_ignore_exitcode(cmd, cwd=self.root)<EOL>diff_files = self.parse_diff_filenames(diff_files)<EOL>return set(f for f in diff_files if f.endswith('<STR_LIT>'))<EOL>
Get the py files which have been changed since rev.