diff --git a/python/unittest_py/requirements.txt b/python/unittest_py/requirements.txt
index 5a59935887bbe46b3e8bbb970402de74542e7686..752f3545c69ccc14cfa2dd823e9dada783602db7 100644
--- a/python/unittest_py/requirements.txt
+++ b/python/unittest_py/requirements.txt
@@ -10,3 +10,4 @@ scipy>=0.19.0, <=1.2.1 ; python_version<"3.5"
 scipy<=1.3.1 ; python_version=="3.5"
 scipy ; python_version>"3.5"
 prettytable
+distro
diff --git a/tools/check_op_desc.py b/tools/check_op_desc.py
index 15e410401216ce68fc4178bb4e60d3ac159523f4..78abb6f36c60626d2e022e6be017f5dbfa23d2c3 100644
--- a/tools/check_op_desc.py
+++ b/tools/check_op_desc.py
@@ -17,8 +17,6 @@ import sys
 from paddle.utils import OpLastCheckpointChecker
 from paddle.fluid.core import OpUpdateType
 
-SAME = 0
-
 INPUTS = "Inputs"
 OUTPUTS = "Outputs"
 ATTRS = "Attrs"
@@ -71,7 +69,7 @@ def diff_vars(origin_vars, new_vars):
     vars_name_only_in_new = set(new_vars.keys()) - set(origin_vars.keys())
 
     for var_name in common_vars_name:
-        if cmp(origin_vars.get(var_name), new_vars.get(var_name)) == SAME:
+        if origin_vars.get(var_name) == new_vars.get(var_name):
             continue
         else:
             error, var_error = True, True
@@ -120,7 +118,7 @@ def diff_attr(ori_attrs, new_attrs):
     attrs_only_in_new = set(new_attrs.keys()) - set(ori_attrs.keys())
 
     for attr_name in common_attrs:
-        if cmp(ori_attrs.get(attr_name), new_attrs.get(attr_name)) == SAME:
+        if ori_attrs.get(attr_name) == new_attrs.get(attr_name):
             continue
         else:
             error, attr_error = True, True
@@ -184,7 +182,7 @@ def compare_op_desc(origin_op_desc, new_op_desc):
     new = json.loads(new_op_desc)
     desc_error_message = {}
     version_error_message = {}
-    if cmp(origin_op_desc, new_op_desc) == SAME:
+    if origin_op_desc == new_op_desc:
         return desc_error_message, version_error_message
 
     for op_type in origin:
diff --git a/tools/summary_env.py b/tools/summary_env.py
index 38bae87651d4b24fc7377c65f371995c893fda42..d12e644cc28daa14bc7de879bc295ad7b2fc91e5 100644
--- a/tools/summary_env.py
+++ b/tools/summary_env.py
@@ -13,6 +13,7 @@
 # limitations under the License.
 import os
 import sys
+import distro
 import platform
 import subprocess
 
@@ -47,8 +48,8 @@ def get_os_info():
         plat = "macOs"
         ver = platform.mac_ver()[0]
     elif platform.system() == "Linux":
-        plat = platform.linux_distribution()[0]
-        ver = platform.linux_distribution()[1]
+        plat = distro.linux_distribution()[0]
+        ver = distro.linux_distribution()[1]
     elif platform.system() == "Windows":
         plat = "Windows"
         ver = platform.win32_ver()[0]