Removed used_args param from string.Formatter.get_field. It was left in by mistake from an earlier edit.
diff --git a/Doc/library/string.rst b/Doc/library/string.rst
index 7810e46..b0061b7 100644
--- a/Doc/library/string.rst
+++ b/Doc/library/string.rst
@@ -125,7 +125,7 @@
field, then the values of *field_name*, *format_spec* and *conversion*
will be ``None``.
- .. method:: get_field(field_name, args, kwargs, used_args)
+ .. method:: get_field(field_name, args, kwargs)
Given *field_name* as returned by :meth:`parse` (see above), convert it to
an object to be formatted. Returns a tuple (obj, used_key). The default