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-rw-r--r--Python/bltinmodule.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index 7e7ad2e..ab76006 100644
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -1586,7 +1586,9 @@ builtin_issubclass(PyObject *self, PyObject *args)
PyDoc_STRVAR(issubclass_doc,
"issubclass(C, B) -> bool\n\
\n\
-Return whether class C is a subclass (i.e., a derived class) of class B.");
+Return whether class C is a subclass (i.e., a derived class) of class B.\n\
+When using a tuple as the second argument issubclass(X, (A, B, ...)),\n\
+is a shortcut for issubclass(X, A) or issubclass(X, B) or ... (etc.).");
static PyObject*