diff --git a/pyproject.toml b/pyproject.toml
index 68887b9df0812edbb566614ce24cfd566666d343..15999a333509ab11e70a3deaa958c91c2a7ab46b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -100,7 +100,7 @@ select = [
     "B012",
     "B013",
     "B014",
-    # "B015",
+    "B015",
     "B016",
     # "B017",
     "B018",
diff --git a/python/paddle/fluid/tests/unittests/auto_parallel/test_dist_assign.py b/python/paddle/fluid/tests/unittests/auto_parallel/test_dist_assign.py
index eb9117772b3fdb10830cd452e380d132d2332121..87064a45a49ffb678a8e4974b6f3a07700e9e031 100644
--- a/python/paddle/fluid/tests/unittests/auto_parallel/test_dist_assign.py
+++ b/python/paddle/fluid/tests/unittests/auto_parallel/test_dist_assign.py
@@ -65,8 +65,7 @@ class TestDistAssign(unittest.TestCase):
         for op in ops:
             if op.type == "assign":
                 dist_op = dist_context.get_dist_op_for_program(op)
-                dist_op.dist_attr.impl_type == "assign"
-                dist_op.dist_attr.impl_idx == 0
+                assert dist_op.dist_attr.impl_type == "assign"
 
                 x_name = op.input_arg_names[0]
                 out_name = op.output_arg_names[0]
diff --git a/python/paddle/fluid/tests/unittests/auto_parallel/test_dist_scale.py b/python/paddle/fluid/tests/unittests/auto_parallel/test_dist_scale.py
index 2bee2285b58ab2c84fe8c4e5a678a63d837b5f66..b68131e361ec04469bae594309b35b23bfde841a 100644
--- a/python/paddle/fluid/tests/unittests/auto_parallel/test_dist_scale.py
+++ b/python/paddle/fluid/tests/unittests/auto_parallel/test_dist_scale.py
@@ -60,8 +60,8 @@ class TestDistScale(unittest.TestCase):
         ops = dist_main_prog.global_block().ops
         scale_op = ops[0]
         dist_op = dist_context.get_dist_op_for_program(scale_op)
-        dist_op.dist_attr.impl_type == "scale"
-        dist_op.dist_attr.impl_idx == 0
+        assert dist_op.dist_attr.impl_type == "scale"
+        assert dist_op.dist_attr.impl_idx == 0
 
         in_name = scale_op.input_arg_names[0]
         out_name = scale_op.output_arg_names[0]
diff --git a/python/paddle/fluid/tests/unittests/auto_parallel/test_dist_shape.py b/python/paddle/fluid/tests/unittests/auto_parallel/test_dist_shape.py
index 5c4ecfcfabbc3d8d2de64b56f64d861453049e2a..0322a817934fdfd1132eab3489c996438b3fa270 100644
--- a/python/paddle/fluid/tests/unittests/auto_parallel/test_dist_shape.py
+++ b/python/paddle/fluid/tests/unittests/auto_parallel/test_dist_shape.py
@@ -60,8 +60,8 @@ class TestDistShape(unittest.TestCase):
         ops = dist_main_prog.global_block().ops
         shape_op = ops[0]
         dist_op = dist_context.get_dist_op_for_program(shape_op)
-        dist_op.dist_attr.impl_type == "shape"
-        dist_op.dist_attr.impl_idx == 0
+        assert dist_op.dist_attr.impl_type == "shape"
+        assert dist_op.dist_attr.impl_idx == 0
 
         in_name = shape_op.input_arg_names[0]
         out_name = shape_op.output_arg_names[0]
diff --git a/python/paddle/fluid/tests/unittests/test_clip_op.py b/python/paddle/fluid/tests/unittests/test_clip_op.py
index 9b6ddcee80e7744e7e410671c597815c6525a588..979ce6e7cc991691ad5860914237490a47d22ace 100644
--- a/python/paddle/fluid/tests/unittests/test_clip_op.py
+++ b/python/paddle/fluid/tests/unittests/test_clip_op.py
@@ -113,7 +113,7 @@ class TestCase5(TestClipOp):
 
 class TestCase6(TestClipOp):
     def initTestCase(self):
-        self.dtype == np.float16
+        self.dtype = np.float16
         self.shape = (4, 8, 8)
         self.max = 0.7
         self.min = 0.2