Python weakref.weakref函数代码示例

 def __init__(self, channel, level, msg, args=None, kwargs=None,
              exc_info=None, extra=None, frame=None, dispatcher=None):
     #: the name of the logger that created it or any other textual
     #: channel description.  This is a descriptive name and should not
     #: be used for filtering.  A log record might have a
     #: :attr:`dispatcher` defined which provides more information for
     #: filtering if this is absolutely necessary.
     self.channel = channel
     #: The message of the log record as new-style format string.
     self.msg = msg
     #: the positional arguments for the format string.
     self.args = args or ()
     #: the keyword arguments for the format string.
     self.kwargs = kwargs or {}
     #: the level of the log record as integer.
     self.level = level
     #: optional exception information.  If set, this is a tuple in the
     #: form ``(exc_type, exc_value, tb)`` as returned by
     #: :func:`sys.exc_info`.
     self.exc_info = exc_info
     #: optional extra information as dictionary.  This is the place
     #: where custom log processors can attach custom context sensitive
     #: data.
     self.extra = ExtraDict(extra or ())
     #: If available, optionally the interpreter frame that created the
     #: log record.  Might not be available for all calls and is removed
     #: when the log record is closed.
     self.frame = frame
     #: the PID of the current process
     self.process = os.getpid()
     if dispatcher is not None:
         dispatcher = weakref(dispatcher)
     self._dispatcher = dispatcher

    def __init__(self, ayum):
        self.repos = {} # list of repos by repoid pointing a repo object 
                        # of repo options/misc data
        self.callback = None # progress callback used for populateSack() for importing the xml files
        self.cache = 0
        self.pkgSack = MetaSack()
        self.logger = logging.getLogger("yum.RepoStorage")

        self._setup = False

        self.ayum = weakref(ayum)
        # callbacks for handling gpg key imports for repomd.xml sig checks
        # need to be set from outside of the repos object to do anything
        # even quasi-useful
        # defaults to what is probably sane-ish
        self.gpg_import_func = _wrap_ayum_getKeyForRepo(ayum)
        self.gpgca_import_func = _wrap_ayum_getKeyForRepo(ayum, ca=True)
        self.confirm_func = None

        # This allow listEnabled() to be O(1) most of the time.
        self._cache_enabled_repos = []
        self.quick_enable_disable = {}

        #  This allows plugins to setup a repo. just before the first
        # listEnabled() call.
        self._list_enabled_hasrun = False

    def __init__(self, *args, **kwargs):
        super(Kannel, self).__init__(*args, **kwargs)

        reference = weakref(self)

        # set up event handler for incoming messages
        def on_incoming(sender=None, request=None, response=None, **kwargs):
            transport = reference()
            if transport is not None:
                body, status_code = transport.handle(request)
                response.write(body)
                response.status_code = status_code

        kannel_event.connect(on_incoming, sender=self.name, weak=False)
        del on_incoming

        # set up event handler for outgoing messages
        def on_outgoing(sender=None, instance=None, created=False, **kwargs):
            transport = reference()
            if transport is not None:
                if created is True and instance.transport == transport.name:
                    transport.send(instance)

        signals.post_save.connect(on_outgoing, sender=Outgoing, weak=False)
        del on_outgoing

    def __init__(self, treeConfig: TreeConfig, nameTuple: Tuple[str, ...], description: str,
                 msgArgsInfo: ArgsInfo, parent: Topic = None):
        """
        Create a topic. Should only be called by TopicManager via its
        getOrCreateTopic() method (which gets called in several places
        in pubsub, such as sendMessage, subscribe, and newTopic).

        :param treeConfig: topic tree configuration settings
        :param nameTuple: topic name, in tuple format (no dots)
        :param description: "docstring" for topic
        :param ArgsInfo msgArgsInfo: object that defines MDS for topic
        :param parent: parent of topic

        :raises ValueError: invalid topic name
        """
        if parent is None:
            if nameTuple != (ALL_TOPICS,):
                msg = 'Only one topic, named %s, can be root of topic tree'
                raise ValueError(msg % 'pub.ALL_TOPICS')
        else:
            validateName(nameTuple)
        self.__tupleName = nameTuple

        self.__handlingUncaughtListenerExc = False
        self._treeConfig = treeConfig

        self.__validator = None
        # Registered listeners were originally kept in a Python list; however
        # a few methods require lookup of the Listener for the given callable,
        # which is an O(n) operation. A set() could have been more suitable but
        # there is no way of retrieving an element from a set without iterating
        # over the set, again an O(n) operation. A dict() is ok too. Because
        # Listener.__eq__(callable) returns true if the Listener instance wraps
        # the given callable, and because Listener.__hash__ produces the hash
        # value of the wrapped callable, calling dict[callable] on a
        # dict(Listener -> Listener) mapping will be O(1) in most cases:
        # the dict will take the callables hash, find the list of Listeners that
        # have that hash, and then iterate over that inner list to find the
        # Listener instance which satisfies Listener == callable, and will return
        # the Listener.
        self.__listeners = dict()

        # specification:
        self.__description = None
        self.setDescription(description)
        self.__msgArgs = msgArgsInfo
        if msgArgsInfo.isComplete():
            self.__finalize()
        else:
            assert not self._treeConfig.raiseOnTopicUnspecified

        # now that we know the args are fine, we can link to parent
        self.__parentTopic = None
        self.__subTopics = {}
        if parent is None:
            assert self.hasMDS()
        else:
            self.__parentTopic = weakref(parent)
            assert self.__msgArgs.parentAI() is parent.__msgArgs
            parent.__adoptSubtopic(self)

    def __init__(self, *args, **kwargs):
        super(HTTP, self).__init__(*args, **kwargs)

        reference = weakref(self)

        # set up event handler for incoming messages
        def on_incoming(sender=None, name=None, request=None, response=None, **kwargs):
            transport = reference()
            if transport is not None and name == transport.name:
                body, status_code = transport.handle(request)
                response.write(body)
                response.status_code = status_code

        http_event.connect(on_incoming, weak=False)
        del on_incoming

        # set up event handler for outgoing messages
        def on_outgoing(sender=None, instance=None, created=False, **kwargs):
            transport = reference()
            if transport is not None:
                if created is True and instance.connection.transport == transport.name:
                    try:
                        suppress = instance.in_response_to.message.suppress_responses
                    except:
                        pass
                    else:
                        if suppress:
                            return
                    
                    transport.send(instance)

        signals.post_save.connect(on_outgoing, sender=Outgoing, weak=False)
        del on_outgoing

    def __init__(self, history, row):
        self._history = weakref(history)

        self.tid              = row[0]
        self.beg_timestamp    = row[1]
        self.beg_rpmdbversion = row[2]
        self.end_timestamp    = row[3]
        self.end_rpmdbversion = row[4]
        self.loginuid         = row[5]
        self.return_code      = row[6]

        self._loaded_TW = None
        self._loaded_TD = None
        self._loaded_TS = None

        self._loaded_PROB = None

        self._have_loaded_CMD = False # cmdline can validly be None
        self._loaded_CMD = None

        self._loaded_ER = None
        self._loaded_OT = None

        self.altered_lt_rpmdb = None
        self.altered_gt_rpmdb = None

 def __init__(self, channel, level, msg, args=None, kwargs=None,
              exc_info=None, extra=None, frame=None, dispatcher=None):
     #: the name of the logger that created it or any other textual
     #: channel description.  This is a descriptive name and can be
     #: used for filtering.
     self.channel = channel
     #: The message of the log record as new-style format string.
     self.msg = msg
     #: the positional arguments for the format string.
     self.args = args or ()
     #: the keyword arguments for the format string.
     self.kwargs = kwargs or {}
     #: the level of the log record as integer.
     self.level = level
     #: optional exception information.  If set, this is a tuple in the
     #: form ``(exc_type, exc_value, tb)`` as returned by
     #: :func:`sys.exc_info`.
     #: This parameter can also be ``True``, which would cause the exception info tuple
     #: to be fetched for you.
     self.exc_info = exc_info
     #: optional extra information as dictionary.  This is the place
     #: where custom log processors can attach custom context sensitive
     #: data.
     self.extra = ExtraDict(extra or ())
     #: If available, optionally the interpreter frame that pulled the
     #: heavy init.  This usually points to somewhere in the dispatcher.
     #: Might not be available for all calls and is removed when the log
     #: record is closed.
     self.frame = frame
     #: the PID of the current process
     self.process = None
     if dispatcher is not None:
         dispatcher = weakref(dispatcher)
     self._dispatcher = dispatcher

	def __init__(s, debug_name, debug_locals):
		super().__init__()
		s.debug_name = debug_name
		s.debug_locals = weakref(debug_locals) if debug_locals != None else None
		if debug_locals != None:
			s.kbdbg_name = debug_locals.kbdbg_frame
		s.kbdbg_name += "_" + urllib.parse.quote_plus(debug_name)

 def __init__(self, source, extra_params, record):
     self.source = source
     self.extra_params = extra_params
     self.__record = weakref(record) if record is not None else lambda: None
     self.__cached_for_ctx = None
     self.__html = None
     self.__meta = None

	def prepare_grammar(s, scope):
		#s.marpa.t.input.clear()
		log("prepare grammar..")
		for i in s.editor.root.flatten():
			i.forget_symbols() # todo:start using visitors
		s.marpa.collect_grammar(scope)
		assert s.current_parser_node
		s.marpa.enqueue_precomputation(weakref(s.current_parser_node))

    def __init__(
        self,
        channel,
        level,
        msg,
        args=None,
        kwargs=None,
        exc_info=None,
        extra=None,
        frame=None,
        dispatcher=None,
        frame_correction=0,
    ):
        #: the name of the logger that created it or any other textual
        #: channel description.  This is a descriptive name and can be
        #: used for filtering.
        self.channel = channel
        #: The message of the log record as new-style format string.
        self.msg = msg
        #: the positional arguments for the format string.
        self.args = args or ()
        #: the keyword arguments for the format string.
        self.kwargs = kwargs or {}
        #: the level of the log record as integer.
        self.level = level
        #: optional exception information.  If set, this is a tuple in the
        #: form ``(exc_type, exc_value, tb)`` as returned by
        #: :func:`sys.exc_info`.
        #: This parameter can also be ``True``, which would cause the exception
        #: info tuple to be fetched for you.
        if not exc_info:
            # this is a special case where exc_info=False can be passed in
            # theory, and it should be the same as exc_info=None
            exc_info = None
        self.exc_info = exc_info
        #: optional extra information as dictionary.  This is the place
        #: where custom log processors can attach custom context sensitive
        #: data.

        # TODO: Replace the lambda with str when we remove support for python 2
        self.extra = defaultdict(lambda: u"", extra or ())
        #: If available, optionally the interpreter frame that pulled the
        #: heavy init.  This usually points to somewhere in the dispatcher.
        #: Might not be available for all calls and is removed when the log
        #: record is closed.
        self.frame = frame
        #: A positive integer telling the number of frames to go back from
        #: the frame which triggered the log entry. This is mainly useful
        #: for decorators that want to show that the log was emitted from
        #: form the function they decorate
        self.frame_correction = frame_correction
        #: the PID of the current process
        self.process = None
        if dispatcher is not None:
            dispatcher = weakref(dispatcher)
        self._dispatcher = dispatcher

    def contribute_to_class(self, ModelClass, name):
        # Use weakref because of possible memory leak / circular reference.
        self._model = weakref(ModelClass)
        original_save = ModelClass.save

        def save_and_clear_cache(instance, *args, **kwargs):
            original_save(instance, *args, **kwargs)
            self.clear(instance=instance)

        setattr(ModelClass, name, self)

    def get_connection(self, command_name, shard_hint=None):
        host_id = shard_hint
        if host_id is None:
            raise RuntimeError('The routing pool requires the host id '
                               'as shard hint')

        real_pool = self.cluster.get_pool_for_host(host_id)
        con = real_pool.get_connection(command_name)
        con.__creating_pool = weakref(real_pool)
        return con

    def __init__(self, topicMgr, nameTuple, description, parent=None,
                 argsSpec=None, reqdArgs=(), msgArgs=None, deadListenerCB=None):
        '''Specify the name, description, and parent of this Topic. Any remaining 
        keyword arguments (which will be put in msgArgs) describe the arguments that 
        a listener of this topic must support (i.e., the key is the argument name and
        the value is a documentation string explaining what the argument is for). 
        The reqdArgs is an optional list of names identifying which variables in 
        msgArgs keys are required arguments. E.g. 
        
            Topic(('a','b'), 'what is topic for', parentTopic, _reqdArgs=('c','d'), 
                c='what is c for', d='what is d for', e='what is e for')
            
        would create a Topic whose listeners would have to be of the form
        
            callable(c, d, e=...)
            
        ie 
            callable(c, d, e=...)
            callable(self, c, d, e=..., **kwargs) (method)
            
        would all be valid listeners but 
        
            callable(c, e=...) # error: required d is missing
            callable(c, d, e)  # error: e is optional
        
        would not be valid listeners of this topic. 
        
        The _useKwa is only used by the package to indicate whether the arguments are
        specified as part of __init__ (there is no other way since msgArgs cannot be None). 
        '''
        self.__validateName(nameTuple, parent is None)
        self.__tupleName = nameTuple

        self.__validator    = None
        self.__listeners    = []
        self.__deadListenerCB = deadListenerCB
        
        # specification: 
        self.__description  = None
        self.setDescription(description)
        getArgsSpec = topicMgr._getDefnProvider_().getSubSpec
        self.__msgArgs      = ArgsInfo(getArgsSpec, nameTuple, 
                                       parent, msgArgs, reqdArgs, argsSpec) 
        if self.__msgArgs.isComplete():
            self.__finalize()
        self.argsSpec = self.__msgArgs
        
        # now that we know the args are fine, we can link to parent
        self.__parentTopic = None
        if parent is None:
            assert self.isSendable()
        else:
            self.__parentTopic = weakref(parent)
            parent.__setSubtopic( self.getTailName(), self )

 def __init__(self, client=None):
     breadcrumbs = raven.breadcrumbs.make_buffer(
         client is None or client.enable_breadcrumbs)
     if client is not None:
         client = weakref(client)
     self._client = client
     # Because the thread auto activates the thread local this also
     # means that we auto activate this thing.  Only if someone decides
     # to deactivate manually later another call to activate is
     # technically necessary.
     self.activate()
     self.data = {}
     self.exceptions_to_skip = set()
     self.breadcrumbs = breadcrumbs