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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 remove_section(self, section_name):
 """Remove a section, it cannot be the DEFAULT section. """

        if section_name == "DEFAULT":
            raise Exception("'DEFAULT' is reserved section name.")

        if section_name in self._sections:
            del self._sections[section_name]
        else:
            raise Exception("Error! cannot find section '%s'.")