fix function name

Author: youge325

test/legacy_test/test_zero_dim_binary_api.py

@@ -167,7 +167,9 @@ def test_dygraph_binary(self):
             # 1) x is 0D, y is 0D
             x_np = np.random.randint(-10, 10, [])
             y_np = np.random.randint(-10, 10, [])
-            out_np = eval(f'np.{api.__name__}(x_np, y_np)')
+            # Handle C++ binding functions with leading underscore in __name__
+            api_name = api.__name__.lstrip('_')
+            out_np = eval(f'np.{api_name}(x_np, y_np)')
 
             x = paddle.to_tensor(x_np)
             y = paddle.to_tensor(y_np)
@@ -179,7 +181,7 @@ def test_dygraph_binary(self):
             # 2) x is ND, y is 0D
             x_np = np.random.randint(-10, 10, [3, 5])
             y_np = np.random.randint(-10, 10, [])
-            out_np = eval(f'np.{api.__name__}(x_np, y_np)')
+            out_np = eval(f'np.{api_name}(x_np, y_np)')
 
             x = paddle.to_tensor(x_np)
             y = paddle.to_tensor(y_np)
@@ -191,7 +193,7 @@ def test_dygraph_binary(self):
             # 3) x is 0D , y is ND
             x_np = np.random.randint(-10, 10, [])
             y_np = np.random.randint(-10, 10, [3, 5])
-            out_np = eval(f'np.{api.__name__}(x_np, y_np)')
+            out_np = eval(f'np.{api_name}(x_np, y_np)')
 
             x = paddle.to_tensor(x_np)
             y = paddle.to_tensor(y_np)