code: def test_filter_out_execution_metadata():
      nb = new_notebook(
          cells=[
              new_code_cell(
                  "1 + 1",
                  metadata={
                      "execution": {
                          "iopub.execute_input": "2020-10-12T19:13:45.306603Z",
                          "iopub.status.busy": "2020-10-12T19:13:45.306233Z",
                          "iopub.status.idle": "2020-10-12T19:13:45.316103Z",
                          "shell.execute_reply": "2020-10-12T19:13:45.315429Z",
                          "shell.execute_reply.started": "2020-10-12T19:13:45.306577Z",
                      }
                  },
              )
          ]
      )
  
      text = writes(nb, fmt="py:percent")
      assert "execution" not in text
  
imports: from copy import deepcopy
  import pytest
  from nbformat.v4.nbbase import new_code_cell, new_notebook
  from jupytext import reads, writes
  from jupytext.cli import jupytext
  from jupytext.compare import compare, compare_notebooks
  from jupytext.metadata_filter import filter_metadata, metadata_filter_as_dict
label_desc: Use image node_id 12 for calling a global function with example usage: test_filter_out_execution_metadata() without return types