Library problem under python 2.7

Created by: eeerrrwwwuuu

Hello, I'm trying to import ffmpeg into python script, but it looks like I have syntax problem.

import ffmpeg
stream = ffmpeg.input('input.mp4')
stream = ffmpeg.hflip(stream)
stream = ffmpeg.output(stream, 'output.mp4')
ffmpeg.run(stream)

I get syntax error

  File "pipe_stream.py", line 29, in <module>
    import ffmpeg
  File "/home/nvidia/.local/lib/python2.7/site-packages/ffmpeg/__init__.py", line 1, in <module>
    from .ffmpeg import FFmpegError
  File "/home/nvidia/.local/lib/python2.7/site-packages/ffmpeg/ffmpeg.py", line 52
    self._input_files.append(FFmpeg._File(url=url, options={**options, **kwargs}))
                                                             ^
SyntaxError: invalid syntax