code: def getCoeffStr(self):
          '''
          get the distortion coeffs in a formated string
          '''
          txt = ''
          for key, val in self.coeffs.items():
              txt += '%s = %s\n' % (key, val)
          return txf getCoeffStr(self):
          '''
          get the distortion coeffs in a formated string
          '''
          txt = ''
          for key, val in self.coeffs.items():
              txt += '%s = %s\n' % (key, val)
          return txt
docs: get the distortion coeffs in a formated string