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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def transactions(self, time=TransRange.HOUR, base="btc", quote="usd"):
 """ Returns transactions for the last 'timedelta' seconds. Parameter time is specified by one of two values of TransRange class. """

        params = {'time': time}
        url = self._construct_url("transactions/", base, quote)
        return self._get(url, params=params, return_json=True, version=2)