isort.py 文件源码

def _show_diff(self, file_contents):
        for line in unified_diff(
            file_contents.splitlines(1),
            self.output.splitlines(1),
            fromfile=self.file_path + ':before',
            tofile=self.file_path + ':after',
            fromfiledate=str(datetime.fromtimestamp(os.path.getmtime(self.file_path))
                             if self.file_path else datetime.now()),
            tofiledate=str(datetime.now())
        ):
            sys.stdout.write(line)