code: def test_read_cell_with_one_blank_line_end(
      pynb="""import pandas
  
  """,
  ):
      nb = jupytext.reads(pynb, "py")
      assert len(nb.cells) == 1
      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 10 for calling a global function with example usage: test_read_cell_with_one_blank_line_end(pynb) without return types