要使用BLPAPI和Bloomberg Swap Manager，您需要安装并配置BLPAPI软件包，并具有有效的Bloomberg订阅。

以下是一个简单的代码示例，演示如何使用BLPAPI和Bloomberg Swap Manager获取利率互换合同的详细信息：

import blpapi

def get_swap_details(swap_id):
    options = blpapi.SessionOptions()
    options.setServerHost("localhost")
    options.setServerPort(8194)

    session = blpapi.Session(options)
    session.start()

    service = session.getService("//blp/sessions")
    request = service.createRequest("SwapManagerRequest")

    request.set("swapId", swap_id)
    request.set("includeAllDates", True)

    session.sendRequest(request)

    while True:
        ev = session.nextEvent(500)
        if ev.eventType() == blpapi.Event.RESPONSE or ev.eventType() == blpapi.Event.PARTIAL_RESPONSE:
            for msg in ev:
                element = msg.getElement("swapData")
                print("Swap ID:", element.getElementAsString("swapId"))
                print("Currency:", element.getElementAsString("currency"))
                print("Effective Date:", element.getElementAsString("effectiveDate"))
                print("Maturity Date:", element.getElementAsString("maturityDate"))
                # 其他交换详细信息

        if ev.eventType() == blpapi.Event.RESPONSE:
            break

    session.stop()

swap_id = "SW12345"
get_swap_details(swap_id)

请注意，此示例仅用于演示目的，您需要根据您的具体需求进行修改和扩展。确保您已正确安装并配置BLPAPI软件包，并具有有效的Bloomberg订阅。