1、文件头添加

# -*- coding: utf-8 -*-

2、用codecs.open打开文件

# -*- coding: utf-8 -*-
import codecs
fp = codecs.open(os.path.join(out_dir, no+'.json'), 'w', encoding='utf-8')
fp.write(json.dumps(out_list, ensure_ascii=False))
fp.close()