langchain_nvidia_ai_endpoints.callbacks.get_usage_callback(price_map: dict = {}, callback: Optional[UsageCallbackHandler] = None) → Generator[UsageCallbackHandler, None, None]

获取OpenAI回调处理程序的上下文管理器，方便地公开令牌和成本信息。

返回

OpenAI回调处理程序。

返回类型

OpenAICallbackHandler

参数

• price_map (dict) –

• callback (Optional[UsageCallbackHandler]) –

示例

>>> with get_openai_callback() as cb:
...     # Use the OpenAI callback handler