PyGTK custom signals send a list as parameter

[parinporecha]

I'm trying to add a custom signal to a class -

class TaskBrowser(gobject.GObject):
    __list_signal__ = (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, (<List datatype>,))
    __gsignals__ = {'tasks-deleted': __list_signal__}

    ...

    def on_delete_tasks(self, widget=None, tid=None):
        ...
        gobject.idle_add(self.emit, "tasks-deleted", deleted_tasks) #deleted_tasks is of type 'list'
        ...

    ...

In the __gsignals__ dict, when I state list as parameter type, I get the following error traceback -

File "/home/manhattan/GTG/Hamster_in_hands/GTG/gtk/browser/browser.py", line 61, in <module>
  class TaskBrowser(gobject.GObject):
File "/usr/lib/python2.7/site-packages/gobject/__init__.py", line 60, in __init__
  cls._type_register(cls.__dict__)
File "/usr/lib/python2.7/site-packages/gobject/__init__.py", line 115, in _type_register
  type_register(cls, namespace.get('__gtype_name__'))
TypeError: Error when calling the metaclass bases
  could not get typecode from object​

I saw the list of possible parameter types, and there's no type for list
Is there a way I can pass a list as a signal parameter ?

[xedth2]

__list_signal__ = (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, (gobject.TYPE_PYOBJECT,))

You use gobject.TYPE_PYOBJECT. Look into how python communicates with C code and vice versa and you'll understand more about what exactly is going on.