diff --git a/python/examples/lac/lac_reader.py b/python/examples/lac/lac_reader.py
index c9f31c148123e1975c0102903abf2f2b3b15d3f6..488e7ced1ce27f914f299c45295e82f33c68d6d0 100644
--- a/python/examples/lac/lac_reader.py
+++ b/python/examples/lac/lac_reader.py
@@ -14,8 +14,10 @@
 
 from paddle_serving_client import Client
 import sys
-reload(sys)
-sys.setdefaultencoding('utf-8')
+py_version = sys.version_info[0]
+if py_version == 2:
+    reload(sys)
+    sys.setdefaultencoding('utf-8')
 import os
 import io
 
diff --git a/python/paddle_serving_app/reader/lac_reader.py b/python/paddle_serving_app/reader/lac_reader.py
index a0ed0bbe44460993649675f627310e1a7b53c344..720bbf9c61051dcdc877f0a1f4933718be32263d 100644
--- a/python/paddle_serving_app/reader/lac_reader.py
+++ b/python/paddle_serving_app/reader/lac_reader.py
@@ -12,10 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from paddle_serving_client import Client
 import sys
-reload(sys)
-sys.setdefaultencoding('utf-8')
+py_version = sys.version_info[0]
+if py_version == 2:
+    reload(sys)
+    sys.setdefaultencoding('utf-8')
 import os
 import io
 
diff --git a/python/setup.py.client.in b/python/setup.py.client.in
index 58061f7c887be23223f554d383c98bd75fb4828b..18d47253fd2bfea4b2e689ac06106c136474c7a3 100644
--- a/python/setup.py.client.in
+++ b/python/setup.py.client.in
@@ -42,9 +42,9 @@ def copy_lib():
     lib_list = ['libpython2.7.so.1.0', 'libssl.so.10', 'libcrypto.so.10'] if py_version == 2 else ['libpython3.6m.so.1.0', 'libssl.so.10', 'libcrypto.so.10']
     os.popen('mkdir -p paddle_serving_client/lib')
     for lib in lib_list:
-        r = os.popen('whereis {}'.format(lib))
+        r = os.popen('locate {}'.format(lib))
         text = r.read()
-        os.popen('cp {} ./paddle_serving_client/lib'.format(text.strip().split(' ')[1]))
+        os.popen('cp {} ./paddle_serving_client/lib'.format(text.strip()))
 
 max_version, mid_version, min_version = python_version()