Python - 发送参数作为结构

Question

我正在使用一个API，需要我给出3个参数。

string sessionKey 
int serverId 
struct date details 
     dateTime.iso8601 startDate - Optional, unless endDate is provided. 
     dateTime.iso8601 endDate - Optional. 

我不知道如何在这种情况下定义一个结构。我以这种方式调用API。

>>> server.system.provisioning.snapshot.listSnapshots(sessionKey,1000078204, {datetime.now() , datetime.now()}) 

这样的IM定义我struct的语法：

{datetime.now() , datetime.now()} 

这给了我一个错误：

Traceback (most recent call last): 
    File "/usr/lib64/python3.4/xmlrpc/client.py", line 512, in __dump 
f = self.dispatch[type(value)] 
KeyError: <class 'set'> 

During handling of the above exception, another exception occurred: 

Traceback (most recent call last): 
    File "<stdin>", line 1, in <module> 
    File "/usr/lib64/python3.4/xmlrpc/client.py", line 1098, in __call__ 
    return self.__send(self.__name, args) 
    File "/usr/lib64/python3.4/xmlrpc/client.py", line 1431, in __request 
    allow_none=self.__allow_none).encode(self.__encoding) 
    File "/usr/lib64/python3.4/xmlrpc/client.py", line 951, in dumps 
    data = m.dumps(params) 
    File "/usr/lib64/python3.4/xmlrpc/client.py", line 504, in dumps 
    dump(v, write) 
    File "/usr/lib64/python3.4/xmlrpc/client.py", line 516, in __dump 
    raise TypeError("cannot marshal %s objects" % type(value)) 
TypeError: cannot marshal <class 'set'> objects 

难道我定义struct错了吗？

Answer 1

在XML-RPC（您的错误追溯显示您正在使用）中，“结构”是Python称为“dict（ionary）”的东西，但您试图改用set。你需要使用的API文档（即startDate和endDate）中给出的键名来创建一个dict，即：

>>> server.system.provisioning.snapshot.listSnapshots(sessionKey,1000078204, {"startDate": datetime.now(), "endDate": datetime.now()})