目录1.首先检查自己的环境变量是否配置正确2.从cmd或Pycharm Terminal中pip下载3.如果长时间未响应，判断是网络原因的话，可以从国内的源内下载。4.如果碰到有些库因为pip版本太低的原因而无法下载，可以先升级pip，
I will have multiple applications on the app store and 1 urban airship account to开发者_JS百科 send push notifications to all of these devices.What I want to know is if each Apple device has the same
加载中,请稍侯......