code: def libvlc_audio_equalizer_get_preamp(p_equalizer):
      '''Get the current pre-amplification value from an equalizer.
      @param p_equalizer: valid equalizer handle, must not be NULL.
      @return: preamp value (Hz).
      @version: LibVLC 2.2.0 or later.
      '''
      f = _Cfunctions.get('libvlc_audio_equalizer_get_preamp', None) or \
          _Cfunction('libvlc_audio_equalizer_get_preamp', ((1,),), None,
                      ctypes.c_float, ctypes.c_void_p)
      return f(p_equalizerf libvlc_audio_equalizer_get_preamp(p_equalizer):
      '''Get the current pre-amplification value from an equalizer.
      @param p_equalizer: valid equalizer handle, must not be NULL.
      @return: preamp value (Hz).
      @version: LibVLC 2.2.0 or later.
      '''
      f = _Cfunctions.get('libvlc_audio_equalizer_get_preamp', None) or \
          _Cfunction('libvlc_audio_equalizer_get_preamp', ((1,),), None,
                      ctypes.c_float, ctypes.c_void_p)
      return f(p_equalizer)
docs: Get the current pre-amplification value from an equalizer.
      @param p_equalizer: valid equalizer handle, must not be NULL.
      @return: preamp value (Hz).
      @version: LibVLC 2.2.0 or later.