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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_option(self, name, section=None, vars=None, expect=None):
 """Return an option from ``section`` with ``name``. :param section: section in the ini file to fetch the value; defaults to constructor's ``default_section`` """

        vars = vars if vars else self.default_vars
        if section is None:
            section = self.default_section
        opts = self.get_options(section, opt_keys=[name], vars=vars)
        if opts:
            return opts[name]
        else:
            if self._narrow_expect(expect):
                raise ValueError('no option \'{}\' found in section {}'.
                                 format(name, section))