Index: lnt/lnttool/viewcomparison.py
===================================================================
--- lnt/lnttool/viewcomparison.py
+++ lnt/lnttool/viewcomparison.py
@@ -1,6 +1,8 @@
+from future import standard_library
+standard_library.install_aliases()
 import click
 import time
-import urllib
+import urllib.request
 import webbrowser
 import sys
 
@@ -10,7 +12,7 @@
 
     def url_is_up(url):
         try:
-            o = urllib.urlopen(url)
+            o = urllib.request.urlopen(url)
         except IOError:
             return False
         o.close()
Index: lnt/server/reporting/dailyreport.py
===================================================================
--- lnt/server/reporting/dailyreport.py
+++ lnt/server/reporting/dailyreport.py
@@ -1,3 +1,5 @@
+from future import standard_library
+standard_library.install_aliases()
 from lnt.server.reporting.analysis import REGRESSED, UNCHANGED_FAIL
 from lnt.server.reporting.report import RunResult, RunResults, report_css_styles, pairs, OrderAndHistory
 from lnt.util import multidict
@@ -6,7 +8,7 @@
 import lnt.server.ui.app
 import re
 import sqlalchemy.sql
-import urllib
+import urllib.parse
 
 
 class DailyReport(object):
@@ -44,7 +46,7 @@
     def get_query_parameters_string(self):
         query_params = [
             "{}={}".format(
-                urllib.quote_plus(query_param), urllib.quote_plus(str(value)))
+                urllib.parse.quote_plus(query_param), urllib.parse.quote_plus(str(value)))
             for query_param, value in (
                 ("day_start", self.day_start_offset.seconds // 3600),
                 ("num_days", self.num_prior_days_to_include),
Index: lnt/server/ui/filters.py
===================================================================
--- lnt/server/ui/filters.py
+++ lnt/server/ui/filters.py
@@ -1,7 +1,9 @@
+from future import standard_library
+standard_library.install_aliases()
 import StringIO
 import datetime
 import pprint
-import urllib
+import urllib.parse
 import time
 
 from lnt.server.ui import util
@@ -37,7 +39,7 @@
 
 
 def filter_urlencode(args):
-    return urllib.urlencode(args)
+    return urllib.parse.urlencode(args)
 
 
 def filter_timedelta(start_time):
Index: lnt/tests/nt.py
===================================================================
--- lnt/tests/nt.py
+++ lnt/tests/nt.py
@@ -1,6 +1,8 @@
 """LLVM test-suite compile and execution tests"""
 from __future__ import absolute_import
 from __future__ import print_function
+from future import standard_library
+standard_library.install_aliases()
 import csv
 import os
 import platform
@@ -11,7 +13,7 @@
 import glob
 import time
 import traceback
-import urllib2
+import urllib.error
 import shlex
 import pipes
 import resource
@@ -1775,7 +1777,7 @@
                 try:
                     result = ServerUtil.submitFile(server, report_path, False,
                                                    merge_run=merge_run)
-                except (urllib2.HTTPError, urllib2.URLError) as e:
+                except (urllib.error.HTTPError, urllib.error.URLError) as e:
                     logger.warning("submitting to {} failed with {}"
                                    .format(server, e))
         else:
Index: lnt/util/ServerUtil.py
===================================================================
--- lnt/util/ServerUtil.py
+++ lnt/util/ServerUtil.py
@@ -2,9 +2,12 @@
 Utility for submitting files to a web server over HTTP.
 """
 from __future__ import print_function
+from future import standard_library
+standard_library.install_aliases()
 import sys
-import urllib
-import urllib2
+import urllib.request
+import urllib.parse
+import urllib.error
 import contextlib
 import json
 
@@ -39,13 +42,13 @@
         if merge_run is not None:
             values['merge'] = merge_run
     headers = {'Accept': 'application/json'}
-    data = urllib.urlencode(values)
+    data = urllib.parse.urlencode(values).encode(encoding='ascii')
     try:
-        response = urllib2.urlopen(urllib2.Request(url, data, headers=headers))
-    except urllib2.HTTPError as e:
+        response = urllib.request.urlopen(urllib.request.Request(url, data, headers=headers))
+    except urllib.error.HTTPError as e:
         _show_json_error(e.read())
         return
-    except urllib2.URLError as e:
+    except urllib.error.URLError as e:
         sys.stderr.write("error: could not resolve '%s': %s\n" %
                          (url, e))
         return