code: def skewness(signal):
      """Computes skewness of the signal.
  
      Feature computational cost: 1
  
      Parameters
      ----------
      signal : nd-array
          Input from which skewness is computed
  
      Returns
      -------
      int
          Skewness result
  
      """
      return scipy.stats.skew(signal)
  
imports: import scipy.signal
  from tsfel.feature_extraction.features_utils import *
label_desc: Use image node_id 21 for calling a global function with example usage: skewness(signal) and returns: scipy