code: def highpass(s, f, order=2, fs=1000.0, use_filtfilt=False):
      '''
      @brief: for a given signal s rejects (attenuates) the frequencies lower
      then the cuttof frequency f and passes the frequencies higher than that
      value by applying a Butterworth digital filter
  
      @params:
  
      s: array-like
      signal
  
      f: int
      the cutoff frequency
  
      order: int
      Butterworth filter order
  
      fs: float
      sampling frequency
  
      @return:
  
      signal: array-like
      filtered signal
  
      '''
  
      b, a = signal.butter(order, f * 2 / (fs/2), btype='highpass')
      if use_filtfilt:
          return filtfilt(b, a, s)
  
      return signal.lfilter(b, a, sf highpass(s, f, order=2, fs=1000.0, use_filtfilt=False):
      '''
      @brief: for a given signal s rejects (attenuates) the frequencies lower
      then the cuttof frequency f and passes the frequencies higher than that
      value by applying a Butterworth digital filter
  
      @params:
  
      s: array-like
      signal
  
      f: int
      the cutoff frequency
  
      order: int
      Butterworth filter order
  
      fs: float
      sampling frequency
  
      @return:
  
      signal: array-like
      filtered signal
  
      '''
  
      b, a = signal.butter(order, f * 2 / (fs/2), btype='highpass')
      if use_filtfilt:
          return filtfilt(b, a, s)
  
      return signal.lfilter(b, a, s)
docs: @brief: for a given signal s rejects (attenuates) the frequencies lower
      then the cuttof frequency f and passes the frequencies higher than that
      value by applying a Butterworth digital filter
  
      @params:
  
      s: array-like
      signal
  
      f: int
      the cutoff frequency
  
      order: int
      Butterworth filter order
  
      fs: float
      sampling frequency
  
      @return:
  
      signal: array-like
      filtered signal