Remove unused imports, add a few missing ones

demos/facebook/facebook.py

@@ -14,7 +14,6 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import logging
 import os.path
 import tornado.auth
 import tornado.escape
@@ -22,7 +21,6 @@ import tornado.httpserver
 import tornado.ioloop
 import tornado.options
 import tornado.web
-import uimodules
 
 from tornado.options import define, options
 
@@ -76,7 +74,6 @@ class MainHandler(BaseHandler, tornado.auth.FacebookGraphMixin):
         self.render("stream.html", stream=stream)
 
 
-import logging
 class AuthLoginHandler(BaseHandler, tornado.auth.FacebookGraphMixin):
     @tornado.web.asynchronous
     def get(self):

tornado/auth.py

@@ -59,7 +59,6 @@ import uuid
 from tornado import httpclient
 from tornado import escape
 from tornado.httputil import url_concat
-from tornado.ioloop import IOLoop
 from tornado.util import bytes_type
 
 class OpenIdMixin(object):

tornado/curl_httpclient.py

@@ -19,15 +19,9 @@
 from __future__ import with_statement
 
 import cStringIO
-import calendar
 import collections
-import email.utils
-import errno
-import httplib
 import logging
-import os
 import pycurl
-import sys
 import threading
 import time
 

tornado/httpclient.py

@@ -1,3 +1,5 @@
+import calendar
+import email.utils
 import httplib
 import os
 import time

tornado/httputil.py

@@ -16,6 +16,7 @@
 
 """HTTP utility code shared by clients and servers."""
 
+import logging
 import urllib
 import re
 

tornado/ioloop.py

@@ -507,7 +507,6 @@ class _KQueue(object):
         events = {}
         for kevent in kevents:
             fd = kevent.ident
-            flags = 0
             if kevent.filter == select.KQ_FILTER_READ:
                 events[fd] = events.get(fd, 0) | IOLoop.READ
             if kevent.filter == select.KQ_FILTER_WRITE:

tornado/iostream.py

@@ -20,7 +20,6 @@ from __future__ import with_statement
 
 import collections
 import errno
-import functools
 import logging
 import socket
 import sys

tornado/simple_httpclient.py

@@ -13,7 +13,6 @@ import base64
 import collections
 import contextlib
 import copy
-import errno
 import functools
 import logging
 import os.path

tornado/stack_context.py

@@ -51,7 +51,6 @@ from __future__ import with_statement
 import contextlib
 import functools
 import itertools
-import logging
 import sys
 import threading
 

tornado/test/httpclient_test.py

@@ -5,7 +5,6 @@ from __future__ import with_statement
 import base64
 import binascii
 import gzip
-import logging
 import socket
 
 from contextlib import closing

tornado/test/httpserver_test.py

@@ -2,17 +2,11 @@
 
 from tornado import httpclient, simple_httpclient
 from tornado.escape import json_decode, utf8, _unicode, recursive_unicode
-from tornado.iostream import IOStream
 from tornado.simple_httpclient import SimpleAsyncHTTPClient
 from tornado.testing import AsyncHTTPTestCase, LogTrapTestCase
 from tornado.util import b, bytes_type
 from tornado.web import Application, RequestHandler
-import logging
 import os
-import re
-import socket
-import unittest
-import urllib
 
 try:
     import ssl

tornado/test/ioloop_test.py

@@ -3,7 +3,6 @@
 import unittest
 import time
 
-from tornado import ioloop
 from tornado.testing import AsyncTestCase, LogTrapTestCase
 
 class TestIOLoop(AsyncTestCase, LogTrapTestCase):

tornado/test/web_test.py

@@ -9,7 +9,6 @@ import binascii
 import logging
 import re
 import socket
-import tornado.ioloop
 
 class CookieTestRequestHandler(RequestHandler):
     # stub out enough methods to make the secure_cookie functions work

tornado/test/wsgi_test.py

@@ -1,6 +1,5 @@
 from wsgiref.validate import validator
 
-from tornado.escape import json_encode
 from tornado.testing import AsyncHTTPTestCase, LogTrapTestCase
 from tornado.util import b
 from tornado.web import RequestHandler

tornado/testing.py

@@ -22,13 +22,11 @@ from tornado.httpclient import AsyncHTTPClient
 from tornado.httpserver import HTTPServer
 from tornado.stack_context import StackContext, NullContext
 import contextlib
-import functools
 import logging
 import os
 import sys
 import time
 import tornado.ioloop
-import traceback
 import unittest
 
 _next_port = 10000

tornado/web.py

@@ -55,7 +55,6 @@ import Cookie
 import base64
 import binascii
 import calendar
-import contextlib
 import datetime
 import email.utils
 import functools

tornado/websocket.py

@@ -16,7 +16,6 @@
 import functools
 import hashlib
 import logging
-import re
 import struct
 import time
 import tornado.escape