Memory Profiling / Monitoring (Python) on Google App Engine

I’ve been working with app engine for quite some time, I know that there is appstats but those only show datastore/memcache and other not related to actual memory usage stats.

I’ve tried to integrate with AppTrace but I can’t continue, since I get this error:

  ImportError: dlopen(../apptrace/guppy/sets/setsc.so, 2): Symbol not found: __PyLong_AsScaledDouble
  Referenced from: ../apptrace/guppy/sets/setsc.so
  Expected in: flat namespace

So my question is:
what is the best way (on latest appengine sdk) to profile/monitor memory/catch memory leaks and other python-memory related stuff (either on local or Google server)?

btw, we use Python 2.7