diff --git a/chinaapi/decorators.py b/chinaapi/decorators.py
index 4618ef0..fbfdcad 100644
--- a/chinaapi/decorators.py
+++ b/chinaapi/decorators.py
@@ -12,7 +12,7 @@ def f_retry(*args, **kwargs):
             while tries > 1:
                 try:
                     return f(*args, **kwargs)
-                except exceptions, e:
+                except exceptions as e:
                     if hook is not None:
                         hook(e)
                     tries -= 1
diff --git a/chinaapi/exceptions.py b/chinaapi/exceptions.py
index b7b2ca0..9ba1c38 100644
--- a/chinaapi/exceptions.py
+++ b/chinaapi/exceptions.py
@@ -12,10 +12,10 @@ def __init__(self, url='', code=0, message='', sub_code=0, sub_message=''):
 
     @staticmethod
     def format(code, message):
-        return u'[%s]: %s, ' % (code, message) if code or message else ''
+        return '[%s]: %s, ' % (code, message) if code or message else ''
 
     def __str__(self):
-        return u'%s%srequest: %s' % (
+        return '%s%srequest: %s' % (
             self.format(self.code, self.message), self.format(self.sub_code, self.sub_message), self.url)
 
 
@@ -29,7 +29,7 @@ def is_multipart(self):
 
     def get_url(self):
         if not self.is_multipart() and self.request.body:
-            return u'%s?%s' % (self.request.url, self.request.body)
+            return '%s?%s' % (self.request.url, self.request.body)
         return self.request.url
 
 
diff --git a/chinaapi/jsonDict.py b/chinaapi/jsonDict.py
index ba07621..04f1a00 100644
--- a/chinaapi/jsonDict.py
+++ b/chinaapi/jsonDict.py
@@ -42,4 +42,4 @@ def loads(string):
     >>> r['score']
     95
     """
-    return json.loads(string, object_hook=lambda pairs: JsonDict(pairs.iteritems()))
\ No newline at end of file
+    return json.loads(string, object_hook=lambda pairs: JsonDict(iter(pairs.items())))
\ No newline at end of file
diff --git a/chinaapi/open.py b/chinaapi/open.py
index 2474c06..d92bafd 100644
--- a/chinaapi/open.py
+++ b/chinaapi/open.py
@@ -98,7 +98,7 @@ def _prepare_queries(self, queries):
 
     def _prepare_body(self, queries):
         results = ({}, {})
-        for k, v in queries.items():
+        for k, v in list(queries.items()):
             results[hasattr(v, 'read')][k] = v
         return results
 
@@ -125,7 +125,7 @@ def request(self, segments, **queries):
         def handle_error(e):
             if self._is_retry_error(e):
                 if files:
-                    for f in files.values():
+                    for f in list(files.values()):
                         f.seek(0)
             else:
                 raise e
diff --git a/chinaapi/qq/weibo/open.py b/chinaapi/qq/weibo/open.py
index 250cb60..9c0816d 100644
--- a/chinaapi/qq/weibo/open.py
+++ b/chinaapi/qq/weibo/open.py
@@ -17,21 +17,21 @@
 DEFAULT_IS_POST_METHOD = lambda m: False
 
 RET = {
-    0: u'成功返回',
-    1: u'参数错误',
-    2: u'频率受限',
-    3: u'鉴权失败',
-    4: u'服务器内部错误',
-    5: u'用户错误',
-    6: u'未注册微博',
-    7: u'未实名认证'
+    0: '成功返回',
+    1: '参数错误',
+    2: '频率受限',
+    3: '鉴权失败',
+    4: '服务器内部错误',
+    5: '用户错误',
+    6: '未注册微博',
+    7: '未实名认证'
 }
 
 
 def parse(response):
     r = response.json_dict()
     if 'ret' in r and r.ret != 0:
-        raise ApiResponseError(response, r.ret, RET.get(r.ret, u''), r.get('errcode', ''), r.get('msg', ''))
+        raise ApiResponseError(response, r.ret, RET.get(r.ret, ''), r.get('errcode', ''), r.get('msg', ''))
     if 'data' in r:
         return r.data
     return r
diff --git a/chinaapi/renren/web.py b/chinaapi/renren/web.py
index 9aaa40f..e9aa50d 100644
--- a/chinaapi/renren/web.py
+++ b/chinaapi/renren/web.py
@@ -9,7 +9,7 @@ class Client(ClientBase):
     @staticmethod
     def encrypt_password(e, m, s):
         def _encrypt_chunk(e, m, chunk):
-            chunk = map(ord, chunk)
+            chunk = list(map(ord, chunk))
 
             # 补成偶数长度
             if not len(chunk) % 2 == 0:
@@ -68,8 +68,8 @@ def login(self, username, password):
             if self.get_show_captcha(username) == 1:
                 fn = 'icode.%s.jpg' % os.getpid()
                 self.get_icode(fn)
-                print "Please input the code in file '%s':" % fn
-                icode = raw_input().strip()
+                print("Please input the code in file '%s':" % fn)
+                icode = input().strip()
                 os.remove(fn)
             else:
                 icode = ''
diff --git a/chinaapi/request.py b/chinaapi/request.py
index 9ca07e5..26ff8e5 100644
--- a/chinaapi/request.py
+++ b/chinaapi/request.py
@@ -10,14 +10,14 @@
 
 def json_dict(self):
     try:
-        return self.json(object_hook=lambda pairs: JsonDict(pairs.iteritems()))
-    except ValueError, e:
+        return self.json(object_hook=lambda pairs: JsonDict(iter(pairs.items())))
+    except ValueError as e:
         try:
             self.raise_for_status()
-        except requests.RequestException, e:
-            raise ApiResponseError(self, message=u'%s, response: %s' % (e, self.text))
+        except requests.RequestException as e:
+            raise ApiResponseError(self, message='%s, response: %s' % (e, self.text))
         else:
-            raise ApiResponseError(self, e.__class__.__name__, u'%s, value: %s' % (e, self.text))
+            raise ApiResponseError(self, e.__class__.__name__, '%s, value: %s' % (e, self.text))
 
 
 def jsonp_dict(self):
diff --git a/chinaapi/sina/weibo/open.py b/chinaapi/sina/weibo/open.py
index 35505c2..96b2af7 100644
--- a/chinaapi/sina/weibo/open.py
+++ b/chinaapi/sina/weibo/open.py
@@ -113,7 +113,7 @@ def base64decode(s):
         sign = base64decode(encoded_sign)
         data = loads(base64decode(encoded_data))
         token = Token(data.oauth_token, data.expires, uid=data.user_id, created_at=data.issued_at, **data)
-        is_valid = data.algorithm == u'HMAC-SHA256' and hmac.new(self.app.key, encoded_data,
+        is_valid = data.algorithm == 'HMAC-SHA256' and hmac.new(self.app.key, encoded_data,
                                                                  hashlib.sha256).digest() == sign
         return token, is_valid
 
diff --git a/chinaapi/sina/weibo/web.py b/chinaapi/sina/weibo/web.py
index 23459b1..2191282 100644
--- a/chinaapi/sina/weibo/web.py
+++ b/chinaapi/sina/weibo/web.py
@@ -2,7 +2,7 @@
 from chinaapi.utils import parse_querystring
 from chinaapi.web import ClientBase
 from chinaapi.exceptions import ApiResponseError
-import urllib
+import urllib.request, urllib.parse, urllib.error
 import re
 import base64
 import rsa
@@ -35,7 +35,7 @@ def pre_login(self, su):
         return r.jsonp_dict()
 
     def login(self, username, password):
-        su = base64.b64encode(urllib.quote(username))
+        su = base64.b64encode(urllib.parse.quote(username))
         pre_data = self.pre_login(su)
         sp = self.encrypt_password(password, pre_data)
         data = {
diff --git a/chinaapi/sohu/web.py b/chinaapi/sohu/web.py
index 80f31b4..fb55475 100644
--- a/chinaapi/sohu/web.py
+++ b/chinaapi/sohu/web.py
@@ -5,7 +5,7 @@
 import time
 
 ERROR = {
-    'error3': u'用户名或密码错误',
+    'error3': '用户名或密码错误',
 }
 
 
diff --git a/chinaapi/taobao/open.py b/chinaapi/taobao/open.py
index 0d1167d..2ac660e 100644
--- a/chinaapi/taobao/open.py
+++ b/chinaapi/taobao/open.py
@@ -3,7 +3,7 @@
 import hmac
 from hashlib import md5
 from datetime import datetime
-from urllib import unquote
+from urllib.parse import unquote
 from chinaapi.open import ClientBase, OAuthBase, OAuth2Base, App, Token
 from chinaapi.exceptions import ApiResponseError
 from chinaapi.utils import parse_querystring
@@ -11,7 +11,7 @@
 DEFAULT_VALUE_TO_STR = lambda x: str(x)
 VALUE_TO_STR = {
     type(datetime.now()): lambda v: v.strftime('%Y-%m-%d %H:%M:%S'),
-    type(u'a'): lambda v: v.encode('utf-8'),
+    type('a'): lambda v: v.encode('utf-8'),
     type(0.1): lambda v: "%.2f" % v,
     type(True): lambda v: str(v).lower(),
 }
@@ -32,7 +32,7 @@
 
 
 def join_dict(data):
-    return ''.join(["%s%s" % (k, v) for k, v in sorted(data.iteritems())])
+    return ''.join(["%s%s" % (k, v) for k, v in sorted(data.items())])
 
 
 class Client(ClientBase):
@@ -70,7 +70,7 @@ def _prepare_body(self, queries):
         Return encoded data and files
         """
         data, files = {}, {}
-        for k, v in queries.items():
+        for k, v in list(queries.items()):
             kk = k.replace('__', '.')
             if hasattr(v, 'read'):
                 files[kk] = v
@@ -86,7 +86,7 @@ def _parse_response(self, response):
             raise ApiResponseError(response, error.get('code', ''), error.get('msg', ''),
                                    error.get('sub_code', ''), error.get('sub_msg', ''))
         else:
-            keys = r.keys()
+            keys = list(r.keys())
             if keys and keys[0].endswith('_response'):
                 return r.get(keys[0])
 
diff --git a/chinaapi/utils.py b/chinaapi/utils.py
index 03544a0..3d3b10f 100644
--- a/chinaapi/utils.py
+++ b/chinaapi/utils.py
@@ -1,5 +1,5 @@
 # coding=utf-8
-from urlparse import urlparse
+from urllib.parse import urlparse
 from requests import PreparedRequest
 
 
diff --git a/tests/decorator.py b/tests/decorator.py
index 1638746..1e8fc1f 100644
--- a/tests/decorator.py
+++ b/tests/decorator.py
@@ -22,12 +22,12 @@ def inner_func(*args, **kw):
             if os.path.isabs(path):
                 file_path = path
             else:
-                fun_path, fun_filename = os.path.split(func.func_code.co_filename)
+                fun_path, fun_filename = os.path.split(func.__code__.co_filename)
                 file_path = os.path.join(fun_path, path, os.path.splitext(fun_filename)[0])
 
             if not os.path.splitext(file_path)[1]:
                 serializer = kwargs.get('serializer', vcr.serializer)
-                file_path = os.path.join(file_path, '{0}.{1}'.format(func.func_name.lower(), serializer))
+                file_path = os.path.join(file_path, '{0}.{1}'.format(func.__name__.lower(), serializer))
 
             with vcr.use_cassette(file_path, **kwargs):
                 return func(*args, **kw)
diff --git a/tests/test_decorators.py b/tests/test_decorators.py
index fab5eb7..7543479 100644
--- a/tests/test_decorators.py
+++ b/tests/test_decorators.py
@@ -8,13 +8,13 @@ class DecoratorsTest(TestCase):
 
     @staticmethod
     def handle_error(exception):
-        print exception
+        print(exception)
 
     def test_retry(self):
         @retry(3, hook=self.handle_error)
         def retry_me():
             self.n += 1
-            raise Exception(u'exception in try %s' % self.n)
+            raise Exception('exception in try %s' % self.n)
 
         self.assertRaises(Exception, retry_me)
         self.assertEqual(self.n, 3)
diff --git a/tests/test_open.py b/tests/test_open.py
index 6083bc1..876834a 100644
--- a/tests/test_open.py
+++ b/tests/test_open.py
@@ -3,7 +3,7 @@
 import httpretty
 from chinaapi.open import ClientBase, OAuth2Base, Method, Token, App
 from chinaapi.exceptions import MissingRedirectUri, ApiError
-from test_request import BASE_URL, TestBase
+from .test_request import BASE_URL, TestBase
 
 
 class ApiClient(ClientBase):
diff --git a/tests/test_renren.py b/tests/test_renren.py
index d46682f..9ebef58 100644
--- a/tests/test_renren.py
+++ b/tests/test_renren.py
@@ -23,4 +23,4 @@ def test_api_error(self):
         self.client.token.access_token = ''
         with self.assertRaises(ApiError) as cm:
             self.client.user.get(userId=self.uid)
-        self.assertEqual(u'验证参数错误。', cm.exception.message)
+        self.assertEqual('验证参数错误。', cm.exception.message)