code: def predict(self, x):
      return fitfunc(self.params, x)
  
file_path: scattertext/scattertext/smoothing/power_law.py
imports: import numpy
  from scipy.optimize import leastsq
label_desc: Use image node_id 3 for calling the PowerLaw obj's underlying member method code with example usage: obj.predict(x) and returns: fitfunc