本文整理汇总了Python中weakref.WeakKeyDictionary.keyrefs方法的典型用法代码示例。如果您正苦于以下问题：Python WeakKeyDictionary.keyrefs方法的具体用法？Python WeakKeyDictionary.keyrefs怎么用？Python WeakKeyDictionary.keyrefs使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类weakref.WeakKeyDictionary的用法示例。
在下文中一共展示了WeakKeyDictionary.keyrefs方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: weakref_test
# 需要导入模块: from weakref import WeakKeyDictionary [as 别名]
# 或者: from weakref.WeakKeyDictionary import keyrefs [as 别名]
def weakref_test():
print('weakref test begin')
cache = WeakKeyDictionary()
a = g()
print(sys.getrefcount(a))
print(sys.getrefcount(a))
b = ref(a)
cache[a] = 1
print(cache.keyrefs())
print(sys.getrefcount(a))
del a
print(cache.keyrefs())
print(sys.getrefcount(b()))
print(cache[b()])示例2: EventManager
# 需要导入模块: from weakref import WeakKeyDictionary [as 别名]
# 或者: from weakref.WeakKeyDictionary import keyrefs [as 别名]
class EventManager(object):
"""
An extension of pygame's event handler. This object is responsible for
coordinating most communication between the Models, Views, and Controllers.
Register any object with it by calling RegisterListener(), and that object
will receive a callback on its notify() method whenever an event is fired.
USAGE:
REGISTERING AS A LISTENER USING CONSTRUCTOR
import events
class MyObject(object):
def __init__(self, event_manager):
self.evManager = event_manager # often useful to keep a local reference
self.evManager.RegisterListener(self)
def notify(self, event):
print event
evManager = events.EventManager()
myObject = MyObject(evManager) # On any event, MyObject.notify() will
# now be called.
CREATING NEW EVENTS
# Create the event by adding it to events.CUSTOM_EVENTS
# In this example we assume CUSTOM_EVENTS has the following entry:
...
"MyEvent": 1,
...
SENDING EVENTS
import events
ev = events.MyEvent("Data to send")
self.evManager.Post(ev)
PROCESSING EVENTS
while True:
for event in pygame.event.get():
evManager.notifyAllListeners(event)
RECEIVING EVENTS
import events
... (inside the object's definition)
def notify(self, event):
if events.isUserEvent(event, "MyEvent"):
print event.userData
...
>>> "Data to send"
"""
def __init__(self):
from weakref import WeakKeyDictionary
self.listeners = WeakKeyDictionary()
self.eventQueue = []
def RegisterListener(self, listener):
print "Registering {}".format(listener)
self.listeners[listener] = 1
def UnregisterListener(self, listener):
if listener in self.listeners:
del self.listeners[listener]
def Post(self, event):
''' A thin wrapper around pygame's event post '''
pygame.event.post(event)
def notifyAllListeners(self, event):
items = list(self.listeners.keyrefs())
for listener in items:
if event.type == TICK_EVENT_TYPE:
print items
print "NOTIFY {}".format(listener)
listener.notify(event)