diff --git a/thriftpy2/_compat.py b/thriftpy2/_compat.py
index 7229d2a..84d77c9 100644
--- a/thriftpy2/_compat.py
+++ b/thriftpy2/_compat.py
@@ -11,6 +11,8 @@
 
 import platform
 import sys
+from urllib.parse import urlparse
+from urllib.request import urlopen
 
 PY3 = sys.version_info[0] == 3
 PY35 = sys.version_info >= (3, 5)
@@ -19,24 +21,12 @@
 UNIX = platform.system() in ("Linux", "Darwin")
 CYTHON = UNIX and not PYPY  # Cython always disabled in pypy and windows
 
-if PY3:
-    text_type = str
-    string_types = (str,)
-    from urllib.request import urlopen
-    from urllib.parse import urlparse
-
-    def u(s):
-        return s
-else:
-    text_type = unicode  # noqa
-    string_types = (str, unicode)  # noqa
-    from urllib2 import urlopen  # noqa
-    from urlparse import urlparse  # noqa
-
-    def u(s):
-        if not isinstance(s, text_type):
-            s = s.decode("utf-8")
-        return s
+text_type = str
+string_types = (str,)
+
+
+def u(s):
+    return s
 
 
 def with_metaclass(meta, *bases):
diff --git a/thriftpy2/contrib/aio/rpc.py b/thriftpy2/contrib/aio/rpc.py
index a6e4254..6ee8445 100644
--- a/thriftpy2/contrib/aio/rpc.py
+++ b/thriftpy2/contrib/aio/rpc.py
@@ -1,20 +1,13 @@
 # -*- coding: utf-8 -*-
+import urllib
 import warnings
 
-from thriftpy2._compat import PY3
-if PY3:
-    import urllib
-else:
-    import urllib2 as urllib
-    import urlparse
-    urllib.parse = urlparse
-
-from .processor import TAsyncProcessor
 from .client import TAsyncClient
+from .processor import TAsyncProcessor
 from .protocol.binary import TAsyncBinaryProtocolFactory
-from .transport.buffered import TAsyncBufferedTransportFactory
-from .socket import TAsyncSocket, TAsyncServerSocket
 from .server import TAsyncServer
+from .socket import TAsyncServerSocket, TAsyncSocket
+from .transport.buffered import TAsyncBufferedTransportFactory
 
 
 async def make_client(service, host='localhost', port=9090, unix_socket=None,
diff --git a/thriftpy2/http.py b/thriftpy2/http.py
index ef0a678..ae18c3a 100644
--- a/thriftpy2/http.py
+++ b/thriftpy2/http.py
@@ -32,33 +32,20 @@
 
 from __future__ import absolute_import
 
+import http.client as http_client
+import http.server as http_server
 import os
 import socket
 import sys
+import urllib
 from contextlib import contextmanager
 from io import BytesIO
 
-from thriftpy2._compat import PY3
-if PY3:
-    import http.client as http_client
-    import http.server as http_server
-    import urllib
-else:
-    import httplib as http_client
-    import BaseHTTPServer as http_server
-    import urllib2 as urllib
-    import urlparse
-    urllib.parse = urlparse
-    urllib.parse.quote = urllib.quote
-
-
-from thriftpy2.thrift import TProcessor, TClient
-from thriftpy2.server import TServer
-from thriftpy2.transport import TTransportBase, TMemoryBuffer
-
 from thriftpy2.protocol import TBinaryProtocolFactory
-from thriftpy2.transport import TBufferedTransportFactory
-
+from thriftpy2.server import TServer
+from thriftpy2.thrift import TClient, TProcessor
+from thriftpy2.transport import (TBufferedTransportFactory, TMemoryBuffer,
+                                 TTransportBase)
 
 HTTP_URI = '{scheme}://{host}:{port}{path}'
 DEFAULT_HTTP_CLIENT_TIMEOUT_MS = 30000  # 30 seconds
diff --git a/thriftpy2/rpc.py b/thriftpy2/rpc.py
index dbc75dd..c9e7664 100644
--- a/thriftpy2/rpc.py
+++ b/thriftpy2/rpc.py
@@ -4,27 +4,15 @@
 
 import contextlib
 import socket
+import urllib
 import warnings
 
-from thriftpy2._compat import PY3, PY35
-if PY3:
-    import urllib
-else:
-    import urllib2 as urllib
-    import urlparse
-    urllib.parse = urlparse
-    urllib.parse.quote = urllib.quote
-
+from thriftpy2._compat import PY35
 from thriftpy2.protocol import TBinaryProtocolFactory
 from thriftpy2.server import TThreadedServer
-from thriftpy2.thrift import TProcessor, TClient
-from thriftpy2.transport import (
-    TBufferedTransportFactory,
-    TServerSocket,
-    TSSLServerSocket,
-    TSocket,
-    TSSLSocket,
-)
+from thriftpy2.thrift import TClient, TProcessor
+from thriftpy2.transport import (TBufferedTransportFactory, TServerSocket,
+                                 TSocket, TSSLServerSocket, TSSLSocket)
 
 
 def make_client(service, host="localhost", port=9090, unix_socket=None,
@@ -137,7 +125,6 @@ def client_context(service, host="localhost", port=9090, unix_socket=None,
 
 
 if PY35:
-    from thriftpy2.contrib.aio.rpc import (  # noqa
-        make_server as make_aio_server,
-        make_client as make_aio_client
-    )
+    from thriftpy2.contrib.aio.rpc import make_client as make_aio_client
+    from thriftpy2.contrib.aio.rpc import \
+        make_server as make_aio_server  # noqa
diff --git a/thriftpy2/tornado.py b/thriftpy2/tornado.py
index 323e1b5..95e3804 100644
--- a/thriftpy2/tornado.py
+++ b/thriftpy2/tornado.py
@@ -17,32 +17,22 @@
 
 from __future__ import absolute_import
 
+import logging
+import socket
+import struct
+import urllib
 from contextlib import contextmanager
-from tornado import tcpserver, iostream, gen
-from tornado import version as tornado_version
-from io import BytesIO
 from datetime import timedelta
+from io import BytesIO
 
-from .transport import TTransportException, TTransportBase
-from .transport.memory import TMemoryBuffer
-from .thrift import TApplicationException, TProcessor, TClient
+from tornado import gen, iostream, tcpserver
+from tornado import version as tornado_version
 
 # TODO need TCyTornadoStreamTransport to work with cython binary protocol
 from .protocol.binary import TBinaryProtocolFactory
-from ._compat import PY3
-
-if PY3:
-    import urllib
-else:
-    import urllib2 as urllib
-    import urlparse
-
-    urllib.parse = urlparse
-    urllib.parse.quote = urllib.quote
-
-import logging
-import socket
-import struct
+from .thrift import TApplicationException, TClient, TProcessor
+from .transport import TTransportBase, TTransportException
+from .transport.memory import TMemoryBuffer
 
 try:
     from tornado.locks import Lock