无法使用SOAPpy调用Web服务方法

问题内容：

我正在尝试使用SOAPpy调用Web服务：

from SOAPpy import SOAPProxy

url = 'http://www.webservicex.net/WeatherForecast.asmx'

server = SOAPProxy(url);
print server.GetWeatherByPlaceName('Dallas');
print server.GetWeatherByZipCode ('33126');

服务器调用失败：

Traceback (most recent call last):
  File "soap_test.py", line 6, in <module>
    print server.GetWeatherByPlaceName('Dallas');
  File "C:\usr\bin\Python26\lib\site-packages\SOAPpy\Client.py", line 451, in __call__
    return self.__r_call(*args, **kw)
  File "C:\usr\bin\Python26\lib\site-packages\SOAPpy\Client.py", line 473, in __r_call
    self.__hd, self.__ma)
  File "C:\usr\bin\Python26\lib\site-packages\SOAPpy\Client.py", line 387, in __call
    raise p
SOAPpy.Types.faultType: <Fault soap:Client: System.Web.Services.Protocols.SoapException: Server did not recognize the value of HTTP Header SOAPAction: GetWeatherByPlaceName.
   at System.Web.Services.Protocols.Soap11ServerProtocolHelper.RouteRequest()
   at System.Web.Services.Protocols.SoapServerProtocol.RouteRequest(SoapServerMessage message)
   at System.Web.Services.Protocols.SoapServerProtocol.Initialize()
   at System.Web.Services.Protocols.ServerProtocol.SetContext(Type type, HttpContext context, HttpRequest request, HttpResponse response)
   at System.Web.Services.Protocols.ServerProtocolFactory.Create(Type type, HttpContext context, HttpRequest request, HttpResponse response, Boolean& abortProcessing): >

我究竟做错了什么？

问题答案：

如错误消息所述，SOAPpy不会添加SOAPAction
HTTP标头。这就是为什么SOAPpy无法用于许多服务的原因。尝试suds，这是一个有效的示例：

from suds.client import Client

url = 'http://www.webservicex.net/WeatherForecast.asmx?WSDL'
client = Client(url)

print client.service.GetWeatherByPlaceName('Dallas')
print client.service.GetWeatherByZipCode ('33126')

无法使用SOAPpy调用Web服务方法

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