def rgb2hsv(r, g, b): r, g, b = r/255.0, g/255.0, b/255.0 mx = max(r, g, b) mn = min(r, g, b) m = mx-mn if mx == mn: h = 0 elif mx == r: if g >= b: h = ((g-b)/m)*60 else: h = ((g
Python监控文件变化有两种库:pyinotify和watchdog.pyinotify依赖于Linux平台的inotify,后者则对不同平台的的事件都进行了封装.也就是说,watchdog跨平台. 下面看一个小demo from watchdog.observers import Observer from watchdog.events import * import time class FileEventHandler(FileSystemEventHandler): def __in
1.首先我们的目的是长期监听时间变化,事实上应用程序退出. 通过了解我们知道注冊ACTION_TIME_TICK广播接收器能够监听系统事件改变,可是 查看SDK发现ACTION_TIME_TICK广播事件仅仅能动态注冊: Broadcast Action: The current time has changed. Sent every minute. You can not receive this through components declared in manifests, only