code: def _search_conv2d_op_weight(expr):
      """Search name of weight in all ```nn.conv2d``` operator
         This is a helpful function to determine which param need
         to be converted to sparse
  
      Parameters
      ----------
      expr : relay.Expr
          Expr will be searched
  
      Returns
      -------
      ret : Array[String]
          name of weight in all ``nn.conv2d``` operator
      """
      return _ffi_api.search_conv2d_op_weight(expr)
  
imports: from collections import namedtuple
  import numpy
  import scipy.sparse
  import tvm
  from .None import _ffi_api
label_desc: Use image node_id 1 for calling a global function with example usage: _search_conv2d_op_weight(expr) and returns: _ffi_api