diff --git a/examples/caffe/train/mnist/data/mnist_test_lmdb/mnist_test_lmdb/data.mdb b/examples/caffe/train/mnist/data/mnist_test_lmdb/mnist_test_lmdb/data.mdb
new file mode 100644
index 0000000..8859f50
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diff --git a/examples/caffe/train/mnist/data/mnist_test_lmdb/mnist_test_lmdb/lock.mdb b/examples/caffe/train/mnist/data/mnist_test_lmdb/mnist_test_lmdb/lock.mdb
new file mode 100644
index 0000000..41ac0b0
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diff --git a/examples/caffe/train/mnist/data/mnist_train_lmdb/data.mdb b/examples/caffe/train/mnist/data/mnist_train_lmdb/data.mdb
new file mode 100644
index 0000000..5c11ba4
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diff --git a/examples/caffe/train/mnist/data/mnist_train_lmdb/lock.mdb b/examples/caffe/train/mnist/data/mnist_train_lmdb/lock.mdb
new file mode 100644
index 0000000..72a8c7e
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diff --git a/uai/arch_conf/base_conf.py b/uai/arch_conf/base_conf.py
index bf87ad3..6b9e32f 100644
--- a/uai/arch_conf/base_conf.py
+++ b/uai/arch_conf/base_conf.py
@@ -102,13 +102,13 @@ def _add_args(self):
 
     def load_params(self):
         self.params = vars(self.parser.parse_args())
-        if self.params.has_key('cpu'):
+        if 'cpu' in self.params:
             if self.params['cpu'] < 1 or self.params["cpu"] > 8:
                 raise RuntimeError('cpu should be int between 1 to 8, but now:{0}'.format(self.params['cpu']))
-        if self.params.has_key('memory'):
+        if 'memory' in self.params:
             if self.params['memory'] < 1 or self.params["memory"] > 8:
                 raise RuntimeError('memory should be int between 1 to 8, but now:{0}'.format(self.params['memory']))
-        if self.params.has_key('deploy_weight'):
+        if 'deploy_weight' in self.params:
             if int(self.params['deploy_weight']) < 1 or int(self.params["deploy_weight"]) > 100:
                 raise RuntimeError('deploy_weight should be int between 1 to 100, but now:{0}'.format(self.params['deploy_weight']))
 
diff --git a/uai/cmd/base_cmd.py b/uai/cmd/base_cmd.py
index 4eaed9b..657b2ab 100644
--- a/uai/cmd/base_cmd.py
+++ b/uai/cmd/base_cmd.py
@@ -290,7 +290,7 @@ def _cmd_request(self):
              self._cmd_common_request()
 
     def _cmd_common_request(self):
-        if self.cmd_params.has_key('Signature'):
+        if 'Signature' in self.cmd_params:
             self.cmd_params.pop('Signature')
         self.cmd_params['Signature'] = _verfy_ac(self.conf_params['private_key'],
                                                      self.cmd_params)
diff --git a/uai/pack/base_pack_tool.py b/uai/pack/base_pack_tool.py
index 1862d06..856735a 100644
--- a/uai/pack/base_pack_tool.py
+++ b/uai/pack/base_pack_tool.py
@@ -53,7 +53,7 @@ def _load_args(self):
 
     def _analysis_args(self):
         self.config.load_params()
-        if self.config.params.has_key("ai_arch_v"):
+        if "ai_arch_v" in self.config.params:
             if self.platform != self.config.params["ai_arch_v"].lower().split('-')[0]:
                 raise RuntimeError("ai_arch_v should be one version of " + self.platform)
 
diff --git a/uaitrain/operation/pack_docker_image/base_pack_op.py b/uaitrain/operation/pack_docker_image/base_pack_op.py
index f800d1a..c2d7632 100644
--- a/uaitrain/operation/pack_docker_image/base_pack_op.py
+++ b/uaitrain/operation/pack_docker_image/base_pack_op.py
@@ -380,4 +380,4 @@ def cmd_run(self, args):
         self.cpu_image = cpu_image_name
 
         self._build_userimage()
-        
+        
\ No newline at end of file