使用pip安装keras出错 Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None))

问题

今天在winds10下安装keras库的时候报错，错误如下：

 Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ReadTimeoutError("HTTPSConnectionPool(host='pypi.org', port=443): Read timed out. (read timeout=15)",)': /simple/keras/

原因

出现该错误的原因是pip数据源是国外的数据源，加载比较慢，电脑有判断