第一种方案就可以了。起一个独立的线程负责PyQt和后端代码的通信。我这段代码对你或许会有用：
class PtrContainer:
def __init__(self):
self.ptrList=[]
def append(self, ptr):
for p in self.ptrList:
if p is ptr:
return
ptr.setDoneCallback(self.remove)
self.ptrList.append(ptr)
def remove(self, ptr):
i=0
for p in self.ptrList:
if p is ptr:
self.ptrList.pop(i)
return
i+=1
def clear(self):
self.ptrList=[]
def __iter__(self):
return self.ptrList.__iter__()
class Ptr:
def setDoneCallback(self, callback):
self._doneCallback=callback
def done(self):
#原本要判断一下有没有_doneCallback这个属性的。但是其实没有必要，因为这种情况肯定是编程错误
#self._doneCallback=None也必定是编程错误
# if not hasattr(self, "_doneCallback") or self._doneCallback is None:
# return
self._doneCallback(self)
class DeferCallThread(Ptr, QThread):
def __init__(self, deferred, func, args, kwargs):
QThread.__init__(self)
self.func=func
self.deferred=deferred
self.args=args
self.kwargs=kwargs
self.finished.connect(self.done)
def run(self):
try:
result=self.func(*(self.args), **(self.kwargs))
except Exception as e:
print("deferCall caught exception", repr(e))
QMetaObject.invokeMethod(self, "callDeferred", Qt.QueuedConnection,
Q_ARG("bool", True), Q_ARG("PyQt_PyObject", e))
else:
QMetaObject.invokeMethod(self, "callDeferred", Qt.QueuedConnection,
Q_ARG("bool", False), Q_ARG("PyQt_PyObject", result))
@pyqtSlot("bool", "PyQt_PyObject")
def callDeferred(self, errorOccured, result):
if errorOccured:
self.deferred.errback(result)
else:
self.deferred.callback(result)
deferCallThreads=PtrContainer()
def deferCall(func, *args, **kwargs):
df=Deferred()
t=DeferCallThread(df, func, args, kwargs)
deferCallThreads.append(t)
t.start()
return df
在 2011年12月30日 下午11:13，Lerry <
[hidden email]> 写道：
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来自: python-cn`CPyUG`华蟒用户组(中文Python技术邮件列表)
规则:
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[hidden email]
退订:
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详情:
http://code.google.com/p/cpyug/wiki/PythonCn严正: 理解列表! 智慧提问!
http://wiki.woodpecker.org.cn/moin/AskForHelp强烈: 建议使用技巧: 如何有效地报告Bug
http://www.chiark.greenend.org.uk/%7Esgtatham/bugs-cn.html
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