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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 write(self, f):
 """ Write namespace as INI file. :param f: File object or path to file. """

        if isinstance(f, str):
            f = io.open(f, 'w', encoding='utf-8')

        if not hasattr(f, 'read'):
            raise AttributeError("Wrong type of file: {0}".format(type(f)))

        NS_LOGGER.info('Write to `{0}`'.format(f.name))
        for section in self.sections.keys():
            f.write('[{0}]\n'.format(section))
            for k, v in self[section].items():
                f.write('{0:15}= {1}\n'.format(k, v))
            f.write('\n')
        f.close()