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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 get_balance(self, address):
 """ returns the balance object from blockcypher for address """

        url_append = "/balance?token=%s" % self.api_key
        url = self.base_url("addrs/%s" % (address + url_append))
        result = json.loads(urlopen(url).read().decode("utf8"))
        return result