[PyQt] Segfault with QString

[Filip Gruszczyński]

First I would like to say hello to everyone here, since it's my first mail.

I have certain problem with QString, which tend to crash my program,
when casted to a string. I have following code:

class Element(QObject):
	
	def __init__(self, name, content = None, value = None):
		QObject.__init__(self)
		self.__name = name
		self.__content = content
		self.__value = value
		
	def getValue(self):
		return self.__value
	
	def setValue(self, value):
		self.__value = value
		
	def getName(self):
		return self.__name
		
	def hasContent(self):
		return self.__content != None
		
	def getContent(self):
		return self.__content
		
	def setContent(self, content):
		self.__content = content
		
class Attribute(Element):
	
	def __init__(self, name, content):
		Element.__init__(self, name, content)
	
	def isFinal(self):
		return True
		
	def getValues(self):
		return self.getContent().getValues()
		
	def __repr__(self):
		return str(self.getName()) + " " + str(self.getValue()) + "\n"

And in some other place:

self.connect(box, SIGNAL('currentIndexChanged(QString)'), attribute.setValue);

This works perfect, untial I call print on Attribute object, then the
program crashes.

However, If I change code to:

def setValue(self, value):
	self.__value = str(value)

which is basically moving cast to some earlier point, everything works
fine. Anyone has any idea, why this is wrong? Though it's already
working, I would like to know, why it didn't with previous version.

-- 
Filip Gruszczyński