code: def conv3x3(in_planes, out_planes, stride=1):
      """3x3 convolution with padding"""
      return nn.Conv2D(
          channels=out_planes,
          kernel_size=3,
          strides=stride,
          padding=1,
          use_bias=False,
          in_channels=in_planes,
      )
  
imports: from __future__ import division
  import os
  import mxnet
  from mxnet.gluon.block import HybridBlock
  from mxnet.gluon import nn
  from mxnet.gluon.nn import BatchNorm
label_desc: Use image node_id 1 for calling a global function with example usage: conv3x3(in_planes, out_planes, stride) and returns: nn