gistfile1.py

def deletedbandmemcache():
    """Delete all entities in namespace."""
    from google.appengine.api import namespace_manager
    ######################################
    """ #######  IMPORTANT ########## """
    TESTSPACE = 'test'
    namespace_manager.set_namespace(TESTSPACE)
    """ #####  DO NOT DELETE ######## """
    ######################################

    dbmodelstodelete = []

    for model in dbmodelstodelete:
        for x in model.all():
            # You could also batch these for speed.
            x.delete()

    memcache.flush_all()

    # NDB stuff ------------------------

    ndbmodelstodelete = []

    for model in ndbmodelstodelete:
        for x in model.query():
            # There is no extra safeguard for deleting these entities :(
            x.key.delete()

    # Clear NDB memcache
    from ndb import tasklets
    tasklets.get_context().clear_cache()