(Solved) SyntaxError: no viable alternative at input 'return' — jython

I've coded python for a long time, but just recently I've decided to mess around with jython a bit. I notice that jython does not re-implement urlparse.parse_qs so I implemented my own version, if there is an import error.... here is the code:

try:
    from urlparse import parse_qs
except ImportError:
    import sys
    if sys.platform.startswith("java"):            
        IMPORT_EXCEPTION_TEXT = """
Please ensure that "httpcore-4.1.4.jar" and "httpclient-4.1.3.jar" are in your class path!
These libraries can be found here: http://hc.apache.org/
"""
        try:
            from org.apache.http.client.utils import URLEncodedUtils
        except ImportError:
            raise ImportError(IMPORT_EXCEPTION_TEXT)

        from java.net import URI
        from collections import defaultdict

        def parse_qs( qs ):

            response = defaultdict(list)

            for pair in URLEncodedUtils.parse(URI("http:///?%s" % qs ),'ascii'):                
                response[ pair.getName() ].append( pair.getValue() 

            return response.copy() # This is the line causing the problem.
            # The problem is:
            # SyntaxError: no viable alternative at input 'return'
    else:
        raise ImportError("This should never happen, could not import urlparse.parse_qs")

I have never seen an error like this in python, ever, so I don't know what's wrong... Any help would be appreciated!