无法解析XML SOAP响应Python Zeep

Question

我从SOAP服务收到此响应，但我无法解析响应。我想阅读gtin的值。

client = zeep.Client(wsdl=wsdl)
#The soap call receives 4 arguments, the last argument is the response format
soapCall = client.service.GetStock(1,104500009,104500009,"XML")

以下是Eclipse中pydev调试器中响应的样子：

GetStockResponse: {\n    'GetStockResult': '<DRSStock>\\n    <Shop  Number="1">\\n         <s v="104500009"  vi1="13"  vi2="1001"   gtin="5018746023776"  q="1" />         <s v="104500009"  vi1="31"  vi2="1001"  gtin="5018746004058"  q="0" />         <s v="104500009"  vi1="32"  vi2="1001" 

我尝试使用此解析响应，但我收到以下错误：

xml_data = etree.parse(soapCall) 

错误：

TypeError: cannot parse from 'GetStockResponse'