bpo-42528: Improve the docs of most Py*_Check{,Exact} API calls (GH-23602)
I think that none of these API calls can fail, but only few of them are
documented as such. Add the sentence "This function always succeeds" (which is
the same already used e.g. by PyNumber_Check) to all of them.diff --git a/Doc/c-api/tuple.rst b/Doc/c-api/tuple.rst
index c0c14f4..6919e61 100644
--- a/Doc/c-api/tuple.rst
+++ b/Doc/c-api/tuple.rst
@@ -21,14 +21,14 @@
.. c:function:: int PyTuple_Check(PyObject *p)
- Return true if *p* is a tuple object or an instance of a subtype of the tuple
- type.
+ Return true if *p* is a tuple object or an instance of a subtype of the
+ tuple type. This function always succeeds.
.. c:function:: int PyTuple_CheckExact(PyObject *p)
Return true if *p* is a tuple object, but not an instance of a subtype of the
- tuple type.
+ tuple type. This function always succeeds.
.. c:function:: PyObject* PyTuple_New(Py_ssize_t len)