docs: def open(cls, title, conn=None, google_user=None,
               google_password=None):
          """ Open the spreadsheet named ``title``. If no spreadsheet with
          that name exists, a new one will be created. """
          spreadsheet = cls.by_title(title, conn=conn, google_user=google_user,
                                     google_password=google_password)
          if spreadsheet is None:
              spreadsheet = cls.create(title, conn=conn, google_user=google_user,
                                       google_password=google_password)
          return spreadsheet