Python weakref.ReferenceError() Examples

The following are 19 code examples of weakref.ReferenceError(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module weakref , or try the search function .
Example #1
Source File: dill.py    From dagbldr with BSD 3-Clause "New" or "Revised" License 6 votes vote down vote up 
def _locate_object(address, module=None):
    """get object located at the given memory address (inverse of id(obj))"""
    special = [None, True, False] #XXX: more...?
    for obj in special:
        if address == id(obj): return obj
    if module:
        if PY3:
            objects = iter(module.__dict__.values())
        else:
            objects = module.__dict__.itervalues()
    else: objects = iter(gc.get_objects())
    for obj in objects:
        if address == id(obj): return obj
    # all bad below... nothing found so throw ReferenceError or TypeError
    from weakref import ReferenceError
    try: address = hex(address)
    except TypeError:
        raise TypeError("'%s' is not a valid memory address" % str(address))
    raise ReferenceError("Cannot reference object at '%s'" % address)
Example #2
Source File: test_weakref.py    From CTFCrackTools with GNU General Public License v3.0 6 votes vote down vote up 
def test_proxy_ref(self):
        o = C()
        o.bar = 1
        ref1 = weakref.proxy(o, self.callback)
        ref2 = weakref.proxy(o, self.callback)
        del o
        gc.collect()

        def check(proxy):
            proxy.bar

        self.assertRaises(weakref.ReferenceError, check, ref1)
        self.assertRaises(weakref.ReferenceError, check, ref2)

        # Need to add extra step for Jython - in the orginal test, ref counting had already removed C()
        # self.assertRaises(weakref.ReferenceError, bool, weakref.proxy(C()))
        o2 = C()
        ref3 = weakref.proxy(o2)
        del o2
        extra_collect()
        self.assertRaises(weakref.ReferenceError, bool, ref3)

        self.assertTrue(self.cbcalled == 2)
Example #3
Source File: test_weakref.py    From CTFCrackTools-V2 with GNU General Public License v3.0 6 votes vote down vote up 
def test_proxy_ref(self):
        o = C()
        o.bar = 1
        ref1 = weakref.proxy(o, self.callback)
        ref2 = weakref.proxy(o, self.callback)
        del o
        gc.collect()

        def check(proxy):
            proxy.bar

        self.assertRaises(weakref.ReferenceError, check, ref1)
        self.assertRaises(weakref.ReferenceError, check, ref2)

        # Need to add extra step for Jython - in the orginal test, ref counting had already removed C()
        # self.assertRaises(weakref.ReferenceError, bool, weakref.proxy(C()))
        o2 = C()
        ref3 = weakref.proxy(o2)
        del o2
        extra_collect()
        self.assertRaises(weakref.ReferenceError, bool, ref3)

        self.assertTrue(self.cbcalled == 2)
Example #4
Source File: dill.py    From dagbldr with BSD 3-Clause "New" or "Revised" License 6 votes vote down vote up 
def _locate_object(address, module=None):
    """get object located at the given memory address (inverse of id(obj))"""
    special = [None, True, False] #XXX: more...?
    for obj in special:
        if address == id(obj): return obj
    if module:
        if PY3:
            objects = iter(module.__dict__.values())
        else:
            objects = module.__dict__.itervalues()
    else: objects = iter(gc.get_objects())
    for obj in objects:
        if address == id(obj): return obj
    # all bad below... nothing found so throw ReferenceError or TypeError
    from weakref import ReferenceError
    try: address = hex(address)
    except TypeError:
        raise TypeError("'%s' is not a valid memory address" % str(address))
    raise ReferenceError("Cannot reference object at '%s'" % address)
Example #5
Source File: test_weakref.py    From medicare-demo with Apache License 2.0 6 votes vote down vote up 
def test_proxy_ref(self):
        o = C()
        o.bar = 1
        ref1 = weakref.proxy(o, self.callback)
        ref2 = weakref.proxy(o, self.callback)
        del o

        def check(proxy):
            proxy.bar

        extra_collect()
        self.assertRaises(weakref.ReferenceError, check, ref1)
        self.assertRaises(weakref.ReferenceError, check, ref2)
        # XXX: CPython GC collects C() immediately. use ref1 instead on
        # Jython
        if test_support.is_jython:
            self.assertRaises(weakref.ReferenceError, bool, ref1)
        else:
            self.assertRaises(weakref.ReferenceError, bool, weakref.proxy(C()))
        self.assert_(self.cbcalled == 2)
Example #6
Source File: eveventhandler.py    From HomePWN with GNU General Public License v3.0 5 votes vote down vote up 
def handle_event(self, event):
        "return True if the event was handled.  Return False if the application should stop sending this event."
        if event.name not in self.event_handlers:
            return False
        else:
            remove_list = []
            for handler in self.event_handlers[event.name]:
                try:
                    handler(event)
                except weakref.ReferenceError:
                    remove_list.append(handler)
            for dead_handler in remove_list:
                self.event_handlers[event.name].remove(handler)
            return True
Example #7
Source File: test_weakref.py    From gcblue with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
def test_proxy_ref(self):
        o = C()
        o.bar = 1
        ref1 = weakref.proxy(o, self.callback)
        ref2 = weakref.proxy(o, self.callback)
        del o

        def check(proxy):
            proxy.bar

        self.assertRaises(weakref.ReferenceError, check, ref1)
        self.assertRaises(weakref.ReferenceError, check, ref2)
        self.assertRaises(weakref.ReferenceError, bool, weakref.proxy(C()))
        self.assertEqual(self.cbcalled, 2)
Example #8
Source File: dill.py    From dagbldr with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
def ndarraysubclassinstance(obj):
        try: # check if is ndarray, and elif is subclass of ndarray
            if getattr(obj, '__class__', type) is NumpyArrayType: return False
            elif not isinstance(obj, NumpyArrayType): return False
        except ReferenceError: return False # handle 'R3' weakref in 3.x
        # verify that __reduce__ has not been overridden
        NumpyInstance = NumpyArrayType((0,),'int8')
        if id(obj.__reduce_ex__) == id(NumpyInstance.__reduce_ex__) and \
           id(obj.__reduce__) == id(NumpyInstance.__reduce__): return True
        return False
Example #9
Source File: dill.py    From dagbldr with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
def save_dictproxy(pickler, obj):
        log.info("Dp: %s" % obj)
        attr = obj.get('__dict__')
       #pickler.save_reduce(_create_dictproxy, (attr,'nested'), obj=obj)
        if type(attr) == GetSetDescriptorType and attr.__name__ == "__dict__" \
        and getattr(attr.__objclass__, "__dict__", None) == obj:
            pickler.save_reduce(getattr, (attr.__objclass__,"__dict__"),obj=obj)
            return
        # all bad below... so throw ReferenceError or TypeError
        from weakref import ReferenceError
        raise ReferenceError("%s does not reference a class __dict__" % obj)
Example #10
Source File: test_weakref.py    From ironpython2 with Apache License 2.0 5 votes vote down vote up 
def test_proxy_ref(self):
        o = C()
        o.bar = 1
        ref1 = weakref.proxy(o, self.callback)
        ref2 = weakref.proxy(o, self.callback)
        del o

        def check(proxy):
            proxy.bar

        self.assertRaises(weakref.ReferenceError, check, ref1)
        self.assertRaises(weakref.ReferenceError, check, ref2)
        self.assertRaises(weakref.ReferenceError, bool, weakref.proxy(C()))
        self.assertEqual(self.cbcalled, 2)
Example #11
Source File: dill.py    From dagbldr with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
def save_weakproxy(pickler, obj):
    refobj = _locate_object(_proxy_helper(obj))
    try: log.info("R2: %s" % obj)
    except ReferenceError: log.info("R3: %s" % sys.exc_info()[1])
   #callable = bool(getattr(refobj, '__call__', None))
    if type(obj) is CallableProxyType: callable = True
    else: callable = False
    pickler.save_reduce(_create_weakproxy, (refobj, callable), obj=obj)
    return
Example #12
Source File: dill.py    From dagbldr with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
def ndarraysubclassinstance(obj):
        try: # check if is ndarray, and elif is subclass of ndarray
            if getattr(obj, '__class__', type) is NumpyArrayType: return False
            elif not isinstance(obj, NumpyArrayType): return False
        except ReferenceError: return False # handle 'R3' weakref in 3.x
        # verify that __reduce__ has not been overridden
        NumpyInstance = NumpyArrayType((0,),'int8')
        if id(obj.__reduce_ex__) == id(NumpyInstance.__reduce_ex__) and \
           id(obj.__reduce__) == id(NumpyInstance.__reduce__): return True
        return False
Example #13
Source File: eveventhandler.py    From apple_bleee with GNU General Public License v3.0 5 votes vote down vote up 
def handle_event(self, event):
        "return True if the event was handled.  Return False if the application should stop sending this event."
        if event.name not in self.event_handlers:
            return False
        else:
            remove_list = []
            for handler in self.event_handlers[event.name]:
                try:
                    handler(event)
                except weakref.ReferenceError:
                    remove_list.append(handler)
            for dead_handler in remove_list:
                self.event_handlers[event.name].remove(handler)
            return True
Example #14
Source File: dill.py    From dagbldr with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
def save_weakproxy(pickler, obj):
    refobj = _locate_object(_proxy_helper(obj))
    try: log.info("R2: %s" % obj)
    except ReferenceError: log.info("R3: %s" % sys.exc_info()[1])
   #callable = bool(getattr(refobj, '__call__', None))
    if type(obj) is CallableProxyType: callable = True
    else: callable = False
    pickler.save_reduce(_create_weakproxy, (refobj, callable), obj=obj)
    return
Example #15
Source File: main.py    From conary with Apache License 2.0 5 votes vote down vote up 
def __closeCursors(self, doclose=0):
        """__closeCursors() - closes all cursors associated with this connection"""
        if self.__anyCursorsLeft():
            cursors = map(lambda x: x(), self.cursors.data.values())

            for cursor in cursors:
                try:
                    if doclose:
                        cursor.close()
                    else:
                        cursor._reset()
                except weakref.ReferenceError:
                    pass
Example #16
Source File: eveventhandler.py    From EDCOP with Apache License 2.0 5 votes vote down vote up 
def handle_event(self, event):
        "return True if the event was handled.  Return False if the application should stop sending this event."
        if event.name not in self.event_handlers:
            return False
        else:
            remove_list = []
            for handler in self.event_handlers[event.name]:
                try:
                    handler(event)
                except weakref.ReferenceError:
                    remove_list.append(handler)
            for dead_handler in remove_list:
                self.event_handlers[event.name].remove(handler)
            return True
Example #17
Source File: test_weakref.py    From oss-ftp with MIT License 5 votes vote down vote up 
def test_proxy_ref(self):
        o = C()
        o.bar = 1
        ref1 = weakref.proxy(o, self.callback)
        ref2 = weakref.proxy(o, self.callback)
        del o

        def check(proxy):
            proxy.bar

        self.assertRaises(weakref.ReferenceError, check, ref1)
        self.assertRaises(weakref.ReferenceError, check, ref2)
        self.assertRaises(weakref.ReferenceError, bool, weakref.proxy(C()))
        self.assertEqual(self.cbcalled, 2)
Example #18
Source File: eveventhandler.py    From TelegramTUI with MIT License 5 votes vote down vote up 
def handle_event(self, event):
        "return True if the event was handled.  Return False if the application should stop sending this event."
        if event.name not in self.event_handlers:
            return False
        else:
            remove_list = []
            for handler in self.event_handlers[event.name]:
                try:
                    handler(event)
                except weakref.ReferenceError:
                    remove_list.append(handler)
            for dead_handler in remove_list:
                self.event_handlers[event.name].remove(handler)
            return True
Example #19
Source File: test_weakref.py    From BinderFilter with MIT License 5 votes vote down vote up 
def test_proxy_ref(self):
        o = C()
        o.bar = 1
        ref1 = weakref.proxy(o, self.callback)
        ref2 = weakref.proxy(o, self.callback)
        del o

        def check(proxy):
            proxy.bar

        self.assertRaises(weakref.ReferenceError, check, ref1)
        self.assertRaises(weakref.ReferenceError, check, ref2)
        self.assertRaises(weakref.ReferenceError, bool, weakref.proxy(C()))
        self.assertTrue(self.cbcalled == 2)