python dict 写入 json 文件 编码问题

esports = {
    "0": {
        "subject_list": [
            {
                "sign": 2, 
                "name": "aa", 
                "desc": "听阿红的"
            }, 
            {
                "sign": 3, 
                "name": "bb", 
                "desc": "成绩啊啊啊"
            }
        ], 
        "id": 1, 
        "title": "年度最受欢迎电竞选手"
    }
}
filename = 'D:\\Code\\py\\learning\\esports.json'
# 如果filename有中文字符 filename.decode('utf-8')
with open(filename, mode='wb') as f:
    # f.write(json.dumps(esports, f, ensure_ascii=False, sort_keys=True, indent=4))
    f.write(json.dumps(esports, ensure_ascii=False, indent=4))

• 如果有编码问题:

# -*- coding: utf-8 -*-
import sys  
reload(sys)  
sys.setdefaultencoding('utf8')