Mastering Python for Finance - Second Edition

Initializing the broker class

Write the following OandaBroker class, which is specific to our broker, extending the generic Broker class:

import v20class OandaBroker(Broker):
    PRACTICE_API_HOST = 'api-fxpractice.oanda.com'
    PRACTICE_STREAM_HOST = 'stream-fxpractice.oanda.com'

    LIVE_API_HOST = 'api-fxtrade.oanda.com'
    LIVE_STREAM_HOST = 'stream-fxtrade.oanda.com'

    PORT = '443'

    def __init__(self, accountid, token, is_live=False):
        if is_live:            host = self.LIVE_API_HOST            stream_host = self.LIVE_STREAM_HOST        else:            host = self.PRACTICE_API_HOST stream_host = self.PRACTICE_STREAM_HOST super(OandaBroker, self).__init__(host, self.PORT) self.accountid = accountid self.token = token self.api = v20.Context(host, self.port, token=token) self.stream_api = v20.Context(stream_host, ...