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-rw-r--r--Doc/c-api/number.rst4
1 files changed, 2 insertions, 2 deletions
diff --git a/Doc/c-api/number.rst b/Doc/c-api/number.rst
index 9bcb649..4a2d931 100644
--- a/Doc/c-api/number.rst
+++ b/Doc/c-api/number.rst
@@ -278,5 +278,5 @@ Number Protocol
.. c:function:: int PyIndex_Check(PyObject *o)
- Returns True if *o* is an index integer (has the nb_index slot of the
- tp_as_number structure filled in).
+ Returns ``1`` if *o* is an index integer (has the nb_index slot of the
+ tp_as_number structure filled in), and ``0`` otherwise.