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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 read_string(self, content):
 """ Reads a Python string that contains C++ code, and return the declarations tree. """


        header_file = utils.create_temp_file_name(suffix='.h')
        with open(header_file, "w+") as f:
            f.write(content)

        try:
            decls = self.read_file(header_file)
        except Exception:
            utils.remove_file_no_raise(header_file, self.__config)
            raise
        utils.remove_file_no_raise(header_file, self.__config)

        return decls