Ironpython 中的全局变量

Question

我在尝试理解 IronPython 范围规则时遇到了很大的麻烦。

使用以下脚本：

global data
// function for call xml-rpc 
def CallListDatabases(self):
    global synC, synCtx, result, data   
        self.synCtx = synC.Current
        service = XmlRpcService("http://localhost:8000/rpc")
        req = XmlRpcRequest(service, 'vocab_list')
        req.XmlRpcCallCompleteHandler += self.req_XmlRpcCallCompleteHandler
        result = req.Execute(self)

//if call xml-rpc complete then use working rpc 
def req_XmlRpcCallCompleteHandler (self, response, userState):
    global synCtx, synC, data
        word = []
        f = response.TryCast(clr.GetClrType(Fault))
        if f != None:
            self.synCtx.Post(self.SetCallResult, f)
            if f.FaultCode == -1:
                pass
        else:
            self.synCtx.Post(self.SetCallResult, response)

// show result with rpc complete
def SetCallResult(self, userState):
        global data, result                
        if userState.GetType() == clr.GetClrType(Fault):
            f = userState
            if f != None:
                print str(f.FaultString)
                return    
        response = userState
        result = response.TryCast(clr.GetClrType(Array[str]))
        data = result   //I want to use value it

print "value: "+data  //show value     

问题
print "值: "+数据

---

值: [] <<<======不是值

Answer 1

首先，您似乎从未调用过您定义的任何函数。如果您调用这些函数，则 response.TryCast(clr.GetClrType(Array[str])) 的返回值似乎是一个空列表。您是否尝试过在 SetCallResult() 中打印结果的值？我敢打赌它是[]。