code: def _polyfit_dispatcher(
      x, y, deg, rcond=None, full=None, w=None, cov=None
  ):
      return (x, y, w)
  
imports: from __future__ import division, absolute_import, print_function
  import functools
  import re
  import warnings
  import numpy.core.numeric
  from numpy.core import isscalar, abs, finfo, atleast_1d, hstack, dot, array, ones
  from numpy.core import overrides
  from numpy.core.overrides import set_module
  from numpy.lib.twodim_base import diag, vander
  from numpy.lib.function_base import trim_zeros
  from numpy.lib.type_check import iscomplex, real, imag, mintypecode
  from numpy.linalg import eigvals, lstsq, inv
label_desc: Use image node_id 9 for calling a global function with example usage: _polyfit_dispatcher(x, y, deg, rcond, full, w, cov) and returns: x,  y,  w