Port to Python 3.

src/allmydata/util/_python3.py

@@ -123,6 +123,7 @@ PORTED_MODULES = [
     "allmydata.util.spans",
     "allmydata.util.statistics",
     "allmydata.util.time_format",
+    "allmydata.util.tor_provider",
     "allmydata.web.check_results",
     "allmydata.web.common",
     "allmydata.web.directory",

src/allmydata/util/tor_provider.py

@@ -1,5 +1,15 @@
 # -*- coding: utf-8 -*-
+"""
+Ported to Python 3.
+"""
 from __future__ import absolute_import, print_function, with_statement
+from __future__ import division
+from __future__ import unicode_literals
+
+from future.utils import PY2
+if PY2:
+    from future.builtins import filter, map, zip, ascii, chr, hex, input, next, oct, open, pow, round, super, bytes, dict, list, object, range, str, max, min  # noqa: F401
+
 import os
 
 from zope.interface import (