astvisitor.derive_class_name throws exception on call syntax in base classes

[ryan.freckleton]

When attempting to initialize pythoscope against a file such as urlparse.py in the standard library, an ASTError("Unknown node type: (") exception is raised. This can easily be reproduced by runing pythoscope -i on the following class:

    class Example(namedtuple('a')):
        pass

The exception is raised on line 76 of astvisitor.py.

Attached is debug output with a detailed stack trace and the exact node that caused the problem. I've also attached a patch to test/test_static_inspector.py which uncovers this specific error.

[Michal Kwiatkowski (ruby)]

Fixed in trunk r307.

[Michal Kwiatkowski (ruby)]

Fix released in Pythoscope 0.4.2.