Generate set of requirements files for config

def generate_requirements_files(self, base_dir='.'):
        """ Generate set of requirements files for config """

        print("Creating requirements files\n")

        # TODO How to deal with requirements that are not simple, e.g. a github url

        shared = self._get_shared_section()

        requirements_dir = self._make_requirements_directory(base_dir)

        for section in self.config.sections():
            if section == 'metadata':
                continue

            requirements = {}
            for option in self.config.options(section):
                requirements[option] = self.config.get(section, option)

            if not requirements:
                # No need to write out an empty file
                continue

            filename = os.path.join(requirements_dir, '%s.txt' % section)
            self._write_requirements_file(shared, section, requirements, filename)