snapshot.py 文件源码

def clean(self, data):
        """Cleans up `data` before using it as a snapshot reference."""
        if isinstance(data, RequestContext):
            return self.clean(data.flatten())
        # XXX: maybe we can do something smarter than blacklisting when we
        # have a `ContextList`?
        elif isinstance(data, dict) or isinstance(data, ContextList):
            return {
                key: self.clean(data[key]) for key in data.keys()
                if key not in BLACKLISTED_KEYS
            }
        elif isinstance(data, list):
            return [self.clean(item) for item in data]
        return data