code: def _nper_dispatcher(rate, pmt, pv, fv=None, when=None):
      return (rate, pmt, pv, fv)
  
imports: from __future__ import division, absolute_import, print_function
  from decimal import Decimal
  import functools
  import numpy
  from numpy.core import overrides
label_desc: Use image node_id 6 for calling a global function with example usage: _nper_dispatcher(rate, pmt, pv, fv, when) and returns: rate,  pmt,  pv,  fv