Mastering Python for Finance - Second Edition

Implementing the method for fetching positions

Add the following get_positions() method in the OandaBroker class, which will fetch all the available position information for a given account:

def get_positions(self):
    response = self.api.position.list(self.accountid)
    body = response.body
    positions = body.get('positions', [])
    for position in positions:
        symbol = position.instrument
        unrealized_pnl = position.unrealizedPL
        pnl = position.pl
        long = position.long
        short = position.short

        if short.units:
            self.on_position_event(
                symbol, False, short.units, unrealized_pnl, pnl)
        elif long.units:
            self.on_position_event(
                symbol, True, long.units, unrealized_pnl, pnl)
        else:
            self.on_position_event(
                symbol, None, 0, unrealized_pnl, pnl)

In the response body, ...