code: def _prod(iterable):
      """
      Product of a list of numbers.
      Faster than cp.prod for short lists like array shapes.
      """
      product = 1
      for x in iterable:
          product *= x
      return product
  
imports: import cupy
  import numpy
  from cupyx.scipy import linalg
  from ..convolution.correlate import correlate
  from ..filter_design.filter_design_utils import _validate_sos
  from ..utils.arraytools import _axis_reverse, _axis_slice, _const_ext, _even_ext, _odd_ext
  from ..utils.helper_tools import _get_max_smem, _get_max_tpb
  from ._channelizer_cuda import _channelizer
  from ._sosfilt_cuda import _sosfilt
label_desc: Use image node_id 15 for calling a global function with example usage: _prod(iterable) and returns: product