diff -r 0b576ab589c5 Doc/tutorial/datastructures.rst
--- a/Doc/tutorial/datastructures.rst	Sat Nov 12 14:37:11 2016 +0200
+++ b/Doc/tutorial/datastructures.rst	Sat Nov 12 10:55:36 2016 -0500
@@ -60,11 +60,12 @@
    Remove all items from the list.  Equivalent to ``del a[:]``.
 
 
-.. method:: list.index(x)
+.. method:: list.index(x[, start[, end]])
    :noindex:
 
-   Return the index in the list of the first item whose value is *x*. It is an
-   error if there is no such item.
+   Return zero-based index in the list of the first item whose value is *x*.
+   It is an error if there is no such item.  Optional arguments ``start`` and
+   ``end`` are interpreted as in slice notation.
 
 
 .. method:: list.count(x)
@@ -103,6 +104,8 @@
    [66.25, 333, -1, 333, 1, 1234.5, 333]
    >>> a.index(333)
    1
+   >>> a.index(333, 2)  # search for 333 starting at index 2
+   3
    >>> a.remove(333)
    >>> a
    [66.25, -1, 333, 1, 1234.5, 333]