fix pylint

Author: RandyShuai

tests/test_backend.py

@@ -1830,11 +1830,11 @@ def test_strided_slice_dynamic_7(self):
 
     @check_opset_min_version(10, "Slice")
     def test_new_axis_mask(self):
-        x_val = np.arange(5*10*10*10*10*20*30).astype("float32").reshape((5,10,10,10,10,20,30))
+        x_val = np.arange(5*10*10*10*10*20*30).astype("float32").reshape((5, 10, 10, 10, 10, 20, 30))
         y_val = np.array(9, dtype=np.int32)
         x = tf.placeholder(tf.float32, x_val.shape, name=_TFINPUT)
         y = tf.placeholder(tf.int32, y_val.shape, name=_TFINPUT1)
-        x_ = x[tf.newaxis, 0:y, y::2, tf.newaxis, :, tf.newaxis, :y, tf.newaxis,...,9]
+        x_ = x[tf.newaxis, 0:y, y::2, tf.newaxis, :, tf.newaxis, :y, tf.newaxis, ..., 9]
         _ = tf.identity(x_, name=_TFOUTPUT)
         self._run_test_case([_OUTPUT], {_INPUT: x_val, _INPUT1: y_val})