diff --git a/mindspore/nn/layer/quant.py b/mindspore/nn/layer/quant.py
index 4b9de7aae5..8fa18dccd5 100644
--- a/mindspore/nn/layer/quant.py
+++ b/mindspore/nn/layer/quant.py
@@ -112,6 +112,9 @@ def _partial_init(cls_or_self, **kwargs):
     constructor arguments, but different instances.
 
     Examples:
+        >>> class Foo:
+        >>>     def __init__(self, a, b, answer):
+        >>>         pass
         >>> Foo.partial_init = classmethod(_partial_init)
         >>> foo_builder = Foo.partial_init(a=3, b=4).partial_init(answer=42)
         >>> foo_instance1 = foo_builder()