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长桥openapi如何获取盘前盘后的k线,官网文档中的k线都是盘中交易的

**问题描述** 为了减少来回反复沟通,请尽量描述更多问题的细节 **代码例子** ```py ``` **错误信息或结果截图** resampled = df.resample(timeframe).agg({ +----------+--------------------------------------------------------------------------------------------------+ | US | LV1 Real-time Quotes | |----------+--------------------------------------------------------------------------------------------------| | USOption | You do not have access to the market's Open...