code: def test_read_cell_two_blank_lines(
      pynb="""# ---
  # title: cell with two consecutive blank lines
  # ---
  
  # +
  a = 1
  
  
  a + 2
  """,
  ):
      nb = jupytext.reads(pynb, "py")
  
      assert len(nb.cells) == 2
      assert nb.cells[0].cell_type == "raw"
      assert (
          nb.cells[0].source == "---\ntitle: cell with two "
          "consecutive blank lines\n---"
      )
      assert nb.cells[1].cell_type == "code"
      assert nb.cells[1].source == "a = 1\n\n\na + 2"
  
      pynb2 = jupytext.writes(nb, "py")
      compare(pynb2, pynb)
  
imports: import pytest
  from nbformat.v4.nbbase import new_code_cell, new_markdown_cell, new_notebook, new_raw_cell
  import jupytext
  from jupytext.compare import compare, compare_notebooks
label_desc: Use image node_id 6 for calling a global function with example usage: test_read_cell_two_blank_lines(pynb) without return types