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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_user(self, username):
 """ Return a User object for this username. :param username: The name of the user we want more information about. """

        url = self._base_url + "/3/account/{0}".format(username)
        json = self._send_request(url)
        return User(json, self)