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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 getbalance(self, user_id="", as_decimal=True):
 """Calculate the total balance in all addresses belonging to this user. Args: user_id (str):
 this user's unique identifier as_decimal (bool):
 balance is returned as a Decimal if True (default) or a string if False Returns: str or Decimal: this account's total coin balance """

        balance = unicode(self.rpc.call("getbalance", user_id))
        self.logger.debug("\"" + user_id + "\"", self.coin, "balance:", balance)
        if as_decimal:
            return Decimal(balance)
        else:
            return balance