Hello world with traversal, linked from various places; plus some 'what this chapter is for' notes on the other traversal chapters. Hope this helps.

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diff --git a/docs/narr/hellotraversal.py b/docs/narr/hellotraversal.py
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+++ b/docs/narr/hellotraversal.py
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+from wsgiref.simple_server import make_server
+from pyramid.config import Configurator
+from pyramid.response import Response
+
+class Resource(dict):
+    pass
+
+def get_root(request):
+    return Resource({'a': Resource({'b': Resource({'c': Resource()})})})
+
+def hello_world_of_resources(context, request):
+    output = "Here's a resource and its children: %s" % context
+    return Response(output)
+
+if __name__ == '__main__':
+    config = Configurator(root_factory=get_root)
+    config.add_view(hello_world_of_resources, context=Resource)
+    app = config.make_wsgi_app()
+    server = make_server('0.0.0.0', 8080, app)
+    server.serve_forever()
+
+