code: def patchify2d(w_in, w_out, k, *, bias=True):
      """Helper for building a patchify layer as used by ViT models."""
      return nn.Conv2d(w_in, w_out, k, stride=k, padding=0, bias=bias)
  
imports: import numpy
  import torch
  import torch.nn
  from pycls.core.config import cfg
  from torch.nn import Module
label_desc: Use image node_id 2 for calling a global function with example usage: patchify2d(w_in, w_out, k) and returns: nn