tools.py 文件源码

def clone_entity(e, **extra_args):
    from google.appengine.ext import ndb
    klass = e.__class__
    props = dict((v._code_name, v.__get__(e, klass)) for v in klass._properties.itervalues() if type(v) is not ndb.ComputedProperty)
    props.update(extra_args)
    return klass(**props)