Python/Suds: Type not found: 'xs:complexType'
I have the following simple python test script that uses Suds to call a SOAP web service (the service is written in ASP.net):
from suds.client import Client
url = 'http://someURL.asmx?WSDL'
client = Client( url )
result = client.service.GetPackageDetails( "MyPackage" )
print result
When I run this test script I am getting the following error (used code markup as it doesn't wrap):
No handlers could be found for logger "suds.bindings.unmarshaller"
Traceback (most recent call last):
File "sudsTest.py", line 9, in <module>
result = client.service.GetPackageDetails( "t3db" )
File "build/bdist.cygwin-1.5.25-i686/egg/suds/client.py", line 240, in __call__
File "build/bdist.cygwin-1.5.25-i686/egg/suds/client.py", line 379, in call
File "build/bdist.cygwin-1.5.25-i686/egg/suds/client.py", line 240, in __call__
File "build/bdist.cygwin-1.5.25-i686/egg/suds/client.py", line 422, in call
File "build/bdist.cygwin-1.5.25-i686/egg/suds/client.py", line 480, in invoke
File "build/bdist.cygwin-1.5.25-i686/egg/suds/client.py", line 505, in send
File "build/bdist.cygwin-1.5.25-i686/egg/suds/client.py", line 537, in succeeded
File "build/bdist.cygwin-1.5.25-i686/egg/suds/bindings/binding.py", line 149, in get_reply
File "build/bdist.cygwin-1.5.25-i686/egg/suds/bindings/unmarshaller.py", line 303, in process
File "build/bdist.cygwin-1.5.25-i686/egg/suds/bindings/unmarshaller.py", line 88, in process
File "build/bdist.cygwin-1.5.25-i686/egg/suds/bindings/unmarshaller.py", line 104, in append
File "build/bdist.cygwin-1.5.25-i686/egg/suds/bindings/unmarshaller.py", line 181, in append_children
File "build/bdist.cygwin-1.5.25-i686/egg/suds/bindings/unmarshaller.py", line 104, in append
File "build/bdist.cygwin-1.5.25-i686/egg/suds/bindings/unmarshaller.py", line 181, in append_children
File "build/bdist.cygwin-1.5.25-i686/egg/suds/bindings/unmarshaller.py", line 104, in append
File "build/bdist.cygwin-1.5.25-i686/egg/suds/bindings/unmarshaller.py", line 181, in append_children
File "build/bdist.cygwin-1.5.25-i686/egg/suds/bindings/unmarshaller.py", line 102, in append
File "build/bdist.cygwin-1.5.25-i686/egg/suds/bindings/unmarshaller.py", line 324, in start
suds.TypeNotFound: Type not found: 'xs:complexType'
Looking at the source for the WSDL file's header (reformatted to fit):
<?xml version="1.0" encoding="utf-8" ?>
<wsdl:definitions xmlns:http="http://schemas.xmlsoap.org/wsdl/http/"
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
xmlns:s="http://www.w3.org/2001/XMLSchema"
xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:tns="http://http://someInternalURL/webservices.asmx"
xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/"
xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/"
targetNamespace="http://someURL.asmx"
xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
I am guessing based on the last line of output:
suds.TypeNotFound: Type not found: 'xs:complexType'
That I need to use Sud's doctor class to fix the schema but being a SOAP newbie I don't know what exactly needs fixed in my case. Does anyone here have any experience using Suds to fix/correct schema?
Answer
Ewall's resource is a good one. If you try to search in suds trac tickets, you could see that other people have problems similar to yours, but with different object types. It can be a good way to learn from it's examples and how they import their namespaces.
The problem is that your wsdl contains a schema definition that references the (...) but fails to import the "http://schemas.xmlsoap.org/soap/encoding/" namespace (and associated schema) properly. The schema can be patched at runtime using the schema ImportDoctor as discussed here: https://fedorahosted.org/suds/wiki/Documentation#FIXINGBROKENSCHEMAs.
This is a fairly common problem.
A commonly referenced schema (that is not imported) is the SOAP section 5 encoding schema. This can now be fixed as follows:
(all emphasis were mine).
You could try the lines that these documentations provide adding the namespaces presented in your WSDL. This can be a try-and-error aproach.
imp = Import('http://schemas.xmlsoap.org/soap/encoding/')
# Below is your targetNamespace presented in WSDL. Remember
# that you can add more namespaces by appending more imp.filter.add
imp.filter.add('http://someURL.asmx')
doctor = ImportDoctor(imp)
client = Client(url, doctor=doctor)
You didn't provide the WSDL you're working with, I suppose you have reasons to not showing to us... so I think you have to try these possibilities by yourself. Good luck!