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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_account_info(self, fields=None):
 """ Get information about a Telegraph account :param fields: List of account fields to return. Available fields: short_name, author_name, author_url, auth_url, page_count Default: [“short_name”,“author_name”,“author_url”] """


        return self._telegraph.method('getAccountInfo', {
            'fields': json.dumps(fields) if fields else None
        })