diff --git a/mindinsight/mindconverter/graph_based_converter/__init__.py b/mindinsight/mindconverter/graph_based_converter/__init__.py
index c1a43578..888b034f 100644
--- a/mindinsight/mindconverter/graph_based_converter/__init__.py
+++ b/mindinsight/mindconverter/graph_based_converter/__init__.py
@@ -13,7 +13,7 @@
 # limitations under the License.
 # ==============================================================================
 """Graph based scripts converter definition."""
+__all__ = ["graph_based_converter_pytorch_to_ms", "graph_based_converter_tf_to_ms"]
+
 from .framework import graph_based_converter_pytorch_to_ms
 from .framework import graph_based_converter_tf_to_ms
-
-__all__ = ["graph_based_converter_pytorch_to_ms", "graph_based_converter_tf_to_ms"]
diff --git a/mindinsight/mindconverter/graph_based_converter/hierarchical_tree/__init__.py b/mindinsight/mindconverter/graph_based_converter/hierarchical_tree/__init__.py
index 6777ec55..e5b8e8e5 100644
--- a/mindinsight/mindconverter/graph_based_converter/hierarchical_tree/__init__.py
+++ b/mindinsight/mindconverter/graph_based_converter/hierarchical_tree/__init__.py
@@ -13,16 +13,14 @@
 # limitations under the License.
 # ==============================================================================
 """Hierarchical tree module."""
+__all__ = ["HierarchicalTreeFactory"]
+
 import re
 
 from mindinsight.mindconverter.common.log import logger as log
 from .hierarchical_tree import HierarchicalTree
 from ..third_party_graph.onnx_graph_node import OnnxGraphNode
 
-__all__ = [
-    "HierarchicalTreeFactory"
-]
-
 from ...common.exceptions import NodeInputMissing, TreeNodeInsertFail
 
 
diff --git a/mindinsight/mindconverter/graph_based_converter/mapper/__init__.py b/mindinsight/mindconverter/graph_based_converter/mapper/__init__.py
index 60529047..dadf4ad2 100644
--- a/mindinsight/mindconverter/graph_based_converter/mapper/__init__.py
+++ b/mindinsight/mindconverter/graph_based_converter/mapper/__init__.py
@@ -13,8 +13,7 @@
 # limitations under the License.
 # ==============================================================================
 """Mapper module."""
-from .base import ONNXToMindSporeMapper
 
-__all__ = [
-    "ONNXToMindSporeMapper"
-]
+__all__ = ["ONNXToMindSporeMapper"]
+
+from .base import ONNXToMindSporeMapper
diff --git a/mindinsight/mindconverter/graph_based_converter/sub_graph_searcher/search_path.py b/mindinsight/mindconverter/graph_based_converter/sub_graph_searcher/search_path.py
index 0e39cb85..6088edec 100644
--- a/mindinsight/mindconverter/graph_based_converter/sub_graph_searcher/search_path.py
+++ b/mindinsight/mindconverter/graph_based_converter/sub_graph_searcher/search_path.py
@@ -577,12 +577,7 @@ class SearchPath:
             self.graph.precursor_table[s_nd] = p_nodes
 
     def evaluate_score(self):
-        """
-        Evaluate path score.
-
-        Expression = 0.7 * (0.1 * bonus + 0.9 * repl_ratio) + 0.3 * H
-            = 0.07 * bonus + 0.63 * repl_ratio + 0.3 * H
-        """
+        """Evaluate path score."""
         return .7 * self.actual_v + .3 * self.heuristic_v
 
     def _cal_merged_module_length(self, ptn):
diff --git a/mindinsight/mindconverter/graph_based_converter/third_party_graph/__init__.py b/mindinsight/mindconverter/graph_based_converter/third_party_graph/__init__.py
index 4e39c285..da62def2 100644
--- a/mindinsight/mindconverter/graph_based_converter/third_party_graph/__init__.py
+++ b/mindinsight/mindconverter/graph_based_converter/third_party_graph/__init__.py
@@ -13,6 +13,9 @@
 # limitations under the License.
 # ==============================================================================
 """Graph associated definition module."""
+
+__all__ = ["GraphFactory", "PyTorchGraphNode"]
+
 from .base import Graph
 from .pytorch_graph import PyTorchGraph
 from .pytorch_graph_node import PyTorchGraphNode
@@ -44,9 +47,3 @@ class GraphFactory:
                                   output_nodes=output_nodes, sample_shape=sample_shape)
 
         return PyTorchGraph.load(model_path=graph_path, sample_shape=sample_shape)
-
-
-__all__ = [
-    "GraphFactory",
-    "PyTorchGraphNode",
-]