request_context.py 文件源码

def __init__(self, *args, **kwargs):
        class LocalContexts(threading.local):
            def __init__(self):
                super(LocalContexts, self).__init__()
                self._contexts = []

            def append(self, item):
                self._contexts.append(item)

            def pop(self):
                return self._contexts.pop()

        super(ThreadSafeStackContext, self).__init__(*args, **kwargs)

        if hasattr(self, 'contexts'):
            # only patch if context exists
            self.contexts = LocalContexts()