python中关于<urlopen error [WinError 10054] 远程主机强迫关闭了一个现有的连接

from __future__ import (unicode_literals, absolute_import,
                        division, print_function)

try:  # 如果为python2时
    from urllib2.request import urlopen

    """
    在python2中会有默认的urllib2库
    在python3会有默认的urllib库
    最好还是使用requests模块吧！
    """
except ImportError:  # 如果为python3时
    from urllib.request import urlopen
import json
import retrying

# headers = {
#     "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.122 Safari/537.36",
# }

##############################
# 一定要设置timeout超时时间原因
# 是会导致对方网站默认为成为攻击
##############################
@retrying.retry(stop_max_attempt_number=3)
def main(url):
    response = urlopen(url=url, timeout=30)

    red = response.read()


    with open("2017_colse_btc.json", ‘wb‘) as f:
        f.write(red)

    file_response = json.loads(red)
    print(file_response)

if __name__ == ‘__main__‘:
    json_url = ‘https://raw.githubusercontent.com/muxuezi/btc/master/btc_close_2017.json‘
    main(url=json_url)

 response = urlopen(url=url, timeout=30)

    red = response.read()

    response.close()