code: def test_pipe_into_isort():
      text_org = """# %%
  import numpy as np
  np.array([1,2,3])
  
  # %%
  import pandas as pd
  pd.Series([1,2,3])
  
  # %%
  # This is a comment on the second import
  import pandas as pd
  pd.Series([4,5,6])
  """
  
      text_target = """# %%
  import numpy as np
  # This is a comment on the second import
  import pandas as pd
  
  np.array([1,2,3])
  
  # %%
  pd.Series([1,2,3])
  
  # %%
  pd.Series([4,5,6])
  """
  
      nb_org = reads(text_org, fmt="py:percent")
      nb_pipe = pipe_notebook(
          nb_org,
          'isort - --treat-comment-as-code "# %%" --float-to-top',
      )
      text_actual = writes(nb_pipe, "py:percent")
      compare(text_actual, text_target)
  
imports: import pytest
  from jupytext import reads, writes
  from jupytext.cli import pipe_notebook
  from jupytext.compare import compare
label_desc: Use image node_id 1 for calling a global function with example usage: test_pipe_into_isort() without return types