old_contents: from dash.dash_table import *  # noqa: F401, F403, E402
  import warnings
  
  warnings.warn(
      """
  The dash_table package is deprecated. Please replace
  `import dash_table` with `from dash import dash_table`""",
      stacklevel=2,
  )
  
new_contents: from dash.dash_table import *  # noqa: F401, F403, E402
  import warnings
  
  warnings.warn(
      """
  The dash_table package is deprecated. Please replace
  `import dash_table` with `from dash import dash_table`
  
  Also, if you're using any of the table format helpers (e.g. Group), replace 
  `from dash_table.Format import Group` with 
  `from dash.dash_table.Format import Group`""",
      stacklevel=2,
  )
  
subject: Add info on table format helpers to warning message