bw = ref(p._backend)
p.save()
p.close()
print
print "about to re-load package"
p = Package(package_filename)
# ensure that backend has changed
assert p._backend is not bw()
print "package loaded"
#trace_wrap_all (p._backend)
l = list (p.own.annotations)
#print [a._id for a in p.own.annotations]
a1 = p.get_element ("a1")
a2 = p.get_element ("a2")
print id(a1) == id(p.get_element ("a1"))
print a1.content_data
print p.meta[dc_creator]
print p.get_meta(advene_ns % "meta/main_media")
print a1.begin, a1.duration, a1.end
print a1.meta[dc_creator]
print a2.meta[advene_ns % "meta/created_from"]
a2.del_meta(advene_ns % "meta/foo")
print list(a2.iter_meta())
p.create_resource("eraseme", "text/plain").delete()
print list(p.own.resources)
fname=join(base, 'test1.bxp')
print "Saving as ", fname
