lint: improve coding style

Author: JacksonTian

aliyun-python-sdk-core/aliyunsdkcore/utils/parameter_helper.py

@@ -19,8 +19,6 @@
 
 import hashlib
 import base64
-import socket
-import uuid
 import time
 import random
 import threading
@@ -48,6 +46,7 @@ def get_uuid():
  md5.update(msg.encode('utf-8'))
  return md5.hexdigest()
 
+
 def get_iso_8061_date():
  return time.strftime(FORMAT_ISO_8601, time.gmtime())