python cefpython 想在加载完毕后，获取网页的html 但一直空白

Question

class Visitor(object):

def Visit(self, value):
    print("This is the HTML source:")
    print(value)

class LoadHandler(object):

def OnLoadingStateChange(self,browser,is_loading,**_):
    if not is_loading:
        pass

def OnLoadEnd(self,browser,frame,http_code):
    ''''加载完成 打印结果'''
    sv = Visitor();
    frame.GetSource(sv);
    print "end";
    

先上代码了。 我在CEF加载完毕事件后，想得到页面html,但一直没得到结果，为什么？求解

Answer 1

Must keep a strong reference to the StringVisitor object during the visit.

change:

sv = Visitor();

to:

self.sv = Visitor()