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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 edit_account_info(self, short_name=None, author_name=None, author_url=None):
 """ Update information about a Telegraph account. Pass only the parameters that you want to edit :param short_name: Account name, helps users with several accounts remember which they are currently using. Displayed to the user above the "Edit/Publish" button on Telegra.ph, other users don't see this name :param author_name: Default author name used when creating new articles :param author_url: Default profile link, opened when users click on the author's name below the title. Can be any link, not necessarily to a Telegram profile or channels """


        return self._telegraph.method('editAccountInfo', values={
            'short_name': short_name,
            'author_name': author_name,
            'author_url': author_url
        })