Refs #256 - Implement class-based formats

This allows to extend Tablib with new formats far more easily.

1 files changed, 1 insertions, 1 deletions

diff --git a/docs/tutorial.rst b/docs/tutorial.rst
index f530c67..30cce35 100644
--- a/docs/tutorial.rst
+++ b/docs/tutorial.rst
@@ -338,7 +338,7 @@ All we have to do is add them to a :class:`Databook` object... ::
 ... and export to Excel just like :class:`Datasets <Dataset>`. ::
 
     with open('students.xls', 'wb') as f:
-        f.write(book.xls)
+        f.write(book.export('xls'))
 
 The resulting ``students.xls`` file will contain a separate spreadsheet for each :class:`Dataset` object in the :class:`Databook`.