As asked in this google group post:
https://groups.google.com/forum/?fromgroups&hl=en#!topic/google-appengine-python/fQUnsnt-wJ4
I'm not sure whether yaml parsing is the root cause, but I am sure my test suite now takes several times longer to run. Anyone else run into this? Any known workarounds?
To double check I reverted to sdk verson 1.6.2 and, for example, one test suite runs 4x faster (~10s vs 40s).