今天打算把selenium降级重新安装,发现安装时总是失败,报如下错误: raise ReadTimeoutError(self._pool, None, 'Read timed out.') pip._vendor.requests.packages.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='pypi.py thon.org', port=443): Read timed out. 原因是超时了,解决方法:安装…