* python/_dbus.py (Bus::remove_signal_receiver):

  don't add a callback to the match if none has been passed in

* python/matchrules.py (SignalMatchTree::remove): if the rule
  being matched does not have a callback treat it as a wildcard
  fix matching logic

* doc/dbus-tutorial.xml: Add Python tutorial

2 files changed, 11 insertions, 5 deletions

diff --git a/python/_dbus.py b/python/_dbus.py
index d52aa8fc..652d27bd 100644
--- a/python/_dbus.py
+++ b/python/_dbus.py
@@ -126,7 +126,9 @@ class Bus:
             named_service = bus_object.GetNameOwner(named_service, dbus_interface='org.freedesktop.DBus')
         
         match_rule = SignalMatchRule(signal_name, dbus_interface, named_service, path)
-        match_rule.add_handler(handler_function)
+
+	if (handler_function):
+	    match_rule.add_handler(handler_function)
         
         self._match_rule_tree.remove(match_rule)
         
diff --git a/python/matchrules.py b/python/matchrules.py
index 6d5fcd86..9a7edb3e 100644
--- a/python/matchrules.py
+++ b/python/matchrules.py
@@ -52,7 +52,7 @@ class SignalMatchNode:
     def remove_child(self, child, key=None):
         if self.wildcard == child:
             self.wildcard = None
-        elif self.finite.had_key(key):
+        elif self.finite.has_key(key):
             del self.finite[key]
 
 class SignalMatchTree:
@@ -139,11 +139,15 @@ class SignalMatchRule:
             self.dbus_interface == rule.dbus_interface and
             self.sender == rule.sender and
             self.path == rule.path):
-                _funcs_copy_a = self.dbus.handler_functions[0:]
-                _funcs_copy_b = rule.dbus.handler_functions[0:]
+                if rule.handler_functions == []:
+                    return True
+            
+                _funcs_copy_a = self.handler_functions[0:]
+                _funcs_copy_b = rule.handler_functions[0:]
                 _funcs_copy_a.sort()
                 _funcs_copy_b.sort()
-                return a == b
+
+                return _funcs_copy_a == _funcs_copy_b
  
         return False