code: def post_execute(cls, ctx, op):
      ctx[op.outputs[0].key] += 1
  
imports: import numpy
  import pandas
  import pytest
  from ....dataframe import core
  from ...None import OutputType
  from ..None import Operand, TileableOperandMixin, execute, estimate_size, ShuffleProxy
label_desc: Use image node_id 1 for calling the MyOperand4 obj's underlying member method code with example usage: obj.post_execute(cls, ctx, op) without return types