old_contents: """
  read_excel_book.py
  :copyright: (c) 2014-2015 by Onni Software Ltd.
  :license: New BSD License, see LICENSE for more details
  
  This shows how to use **Book** class to write a dictionary
  to sheet spreadsheet.
  """
  import pyexcel as pe
  
  # the dictionary should look like the following:
  #  * key: a string typed key
  #  * value: a two dimensional array or a list of lists
  data={
      "Sheet 1": [[1,2,3],[4,5,6],[7,8,9]],
      "Sheet 2": [['X', 'Y', 'Z'], [1,2,3],[4,5,6]],
      "Sheet 3": [['O', 'P', 'Q'], [3,2,1],[4,3,2]]
  }
  
  # Now simply choose the filename and format you want to save
  # file format is decided by the file extension
  book = pe.Book(data)
  
  # simple save it
  book.save_as("multiple-sheets.xls")
  
  # The output of the file is "multiple-sheets.xls"
  
new_contents: """
  write_excel_book.py
  :copyright: (c) 2014-2015 by Onni Software Ltd.
  :license: New BSD License, see LICENSE for more details
  
  This shows how to use **Book** class to write a dictionary
  to sheet spreadsheet.
  """
  import pyexcel as pe
  import pyexcel.ext.xls # import xls to support xls format
  
  # the dictionary should look like the following:
  #  * key: a string typed key
  #  * value: a two dimensional array or a list of lists
  data={
      "Sheet 1": [[1,2,3],[4,5,6],[7,8,9]],
      "Sheet 2": [['X', 'Y', 'Z'], [1,2,3],[4,5,6]],
      "Sheet 3": [['O', 'P', 'Q'], [3,2,1],[4,3,2]]
  }
  # In order to keep the order of the sheets, please use OrderedDict
  
  # Now simply choose the filename and format you want to save
  # file format is decided by the file extension
  book = pe.Book(data)
  
  # simple save it
  book.save_as("multiple-sheets.xls")
  
  # The output of the file is "multiple-sheets.xls"
  
subject: Update example