SOAP suds and the dreaded schema Type Not Found error

I'm using the latest version of suds (https://fedorahosted.org/suds/) for the first time and I'm getting stalled at step one.

suds.TypeNotFound: Type not found: '(schema, http://www.w3.org/2001/XMLSchema, )'

Now, I know this is well covered ground in the suds world (https://fedorahosted.org/suds/wiki/TipsAndTricks#Schema-TypeNotFound and Python/Suds: Type not found: 'xs:complexType') but this appears to slightly different because (a) schema is supposed to be automatically bound after version 0.3.4 and (b) even explicitly using the workaround, it still doesn't work.

from suds.client import Client
from suds.xsd.sxbasic import Import

url = 'file:wsdl.wsdl'
Import.bind('http://schemas.xmlsoap.org/soap/encoding/')
client = Client(url, cache = None)

with the wsdl:

<?xml version="1.0" encoding="utf-8"?>
<wsdl:definitions
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/"
xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/"
xmlns:tns="http://ws.client.com/Members.asmx"
xmlns:s="http://www.w3.org/2001/XMLSchema"
xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/"
xmlns:http="http://schemas.xmlsoap.org/wsdl/http/"
targetNamespace="http://ws.client.com/Members.asmx"
xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
  <wsdl:types>
    <s:schema elementFormDefault="qualified" targetNamespace="http://ws.client.com/Members.asmx">

      <s:element name="GetCategoriesResponse">
        <s:complexType>
          <s:sequence>
            <s:element minOccurs="0" maxOccurs="1" name="GetCategoriesResult">
              <s:complexType>
                <s:sequence>
                  <s:element ref="s:schema" />
                  <s:any />
                </s:sequence>
              </s:complexType>
            </s:element>
          </s:sequence>
        </s:complexType>
      </s:element>

    </s:schema>
  </wsdl:types>
</wsdl:definitions>

yields the exception above.

I was banging my head for a while on this one. I finally resolved the issue by using the following syntax:

from suds.xsd.doctor import ImportDoctor, Import

url = 'http://somedomain.com/filename.php?wsdl'
imp = Import('http://schemas.xmlsoap.org/soap/encoding/')
imp.filter.add('http://some/namespace/A')
doctor = ImportDoctor(imp)

client = Client(url, doctor=doctor)

Importantly, start with the url. Open that file in your browser and it will provide you with the wsdl definitions. Make sure you have the right url entered here and that an XML file actually opens. Also mind the ?wsdl at the end of the url.

Second, imp = Import('http://schemas.xmlsoap.org/soap/encoding/') will import the standard SOAP schema.

Third, imp.filter.add('http:somedomain.com/A') will add your specific namespace. You can find this namespace location by opening the url you defined above in url=and looking for the section <wsdl:import namespace="http://somedomain.com/A".

Also be mindful of http vs https in your urls.

We got it working and I hope you did as well, even though it is a bit quirky. Perhaps an explicit location or filter will help. E.g.:

imp = Import(
    'http://schemas.xmlsoap.org/soap/encoding/',
    location='http://schemas.xmlsoap.org/soap/encoding/'
)
imp.filter.add('http://ws.client.com/Members.asmx')
client = Client(url, plugins=[ImportDoctor(imp)])

For those who still is troubled by this problem. This link https://bitbucket.org/jurko/suds/issue/20/typenotfound-schema may provide useful information. The solution would be like this:

from suds.client import Client
from suds.xsd.doctor import Import, ImportDoctor

url = 'http://www.webxml.com.cn/WebServices/WeatherWebService.asmx?wsdl'
imp = Import('http://www.w3.org/2001/XMLSchema',
    location='http://www.w3.org/2001/XMLSchema.xsd')
imp.filter.add('http://WebXml.com.cn/')
client = Client(url, doctor=ImportDoctor(imp))

SOAP suds and the dreaded schema Type Not Found error

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