pip install * 总提示网络连接失败的情况下。。。(更换国内源,即可!)
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ReadTimeoutError("HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out. (read timeout=15)")':
NOTE:清华源。(亲测,可用!@2019年11月)
例如:
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple numpy