diff --git a/sleekxmpp/plugins/xep_0009/remote.py b/sleekxmpp/plugins/xep_0009/remote.py
index 8c53411..b5d10b8 100644
--- a/sleekxmpp/plugins/xep_0009/remote.py
+++ b/sleekxmpp/plugins/xep_0009/remote.py
@@ -463,7 +463,7 @@ class RemoteSession(object):
         key = "%s.%s" % (endpoint, name)
         log.debug("Registering call handler for %s (%s)." % (key, method))
         with self._lock:
-            if self._entries.has_key(key):
+            if key in self._entries:
                 raise KeyError("A handler for %s has already been regisered!" % endpoint)
             self._entries[key] = JabberRPCEntry(endpoint, method)
         return key
diff --git a/sleekxmpp/thirdparty/mini_dateutil.py b/sleekxmpp/thirdparty/mini_dateutil.py
index 5b3af9a..6af5ffd 100644
--- a/sleekxmpp/thirdparty/mini_dateutil.py
+++ b/sleekxmpp/thirdparty/mini_dateutil.py
@@ -144,17 +144,17 @@ except:
         if offsetmins == 0:
             return UTC
 
-        if not _fixed_offset_tzs.has_key(offsetmins):
-           if offsetmins < 0:
-               sign = '-'
-               absoff = -offsetmins
-           else:
-               sign = '+'
-               absoff = offsetmins
+        if not offsetmins in _fixed_offset_tzs:
+            if offsetmins < 0:
+                sign = '-'
+                absoff = -offsetmins
+            else:
+                sign = '+'
+                absoff = offsetmins
 
-           name = "UTC%s%02d:%02d" % (sign, int(absoff / 60), absoff % 60)
-           inst = tzoffset(offsetmins, name)
-           _fixed_offset_tzs[offsetmins] = inst
+            name = "UTC%s%02d:%02d" % (sign, int(absoff / 60), absoff % 60)
+            inst = tzoffset(offsetmins, name)
+            _fixed_offset_tzs[offsetmins] = inst
 
         return _fixed_offset_tzs[offsetmins]
 
@@ -240,13 +240,13 @@ except:
         if frac != None:
             # ok, fractions of hour?
             if min == None:
-               frac, min = _math.modf(frac * 60.0)
-               min = int(min)
+                frac, min = _math.modf(frac * 60.0)
+                min = int(min)
 
             # fractions of second?
             if s == None:
-               frac, s = _math.modf(frac * 60.0)
-               s = int(s)
+                frac, s = _math.modf(frac * 60.0)
+                s = int(s)
 
             # and extract microseconds...
             us = int(frac * 1000000)
diff --git a/sleekxmpp/xmlstream/xmlstream.py b/sleekxmpp/xmlstream/xmlstream.py
index 41c53a3..5ba4269 100644
--- a/sleekxmpp/xmlstream/xmlstream.py
+++ b/sleekxmpp/xmlstream/xmlstream.py
@@ -854,13 +854,14 @@ class XMLStream(object):
             Event handlers and the send queue will be threaded
             regardless of these parameters.
         """
-        if kwargs.has_key('threaded') and kwargs.has_key('block'):
-            raise ValueError("process() called with both block and threaded arguments")
-        elif kwargs.has_key('block'):
+        if 'threaded' in kwargs and 'block' in kwargs:
+            raise ValueError("process() called with both " + \
+                             "block and threaded arguments")
+        elif 'block' in kwargs:
             threaded = not(kwargs.get('block', False))
         else:
             threaded = kwargs.get('threaded', True)
-        
+
         self.scheduler.process(threaded=True)
 
         def start_thread(name, target):