PyAutoGUI locateOnScreen方法中minSearchTime参数的目标是什么？

Question

我看不出两者有什么区别

import pyautogui
pyautogui.locateOnScreen("anImage")

以及

^{pr2}$

文档中没有关于minSearchTime的解释或参考。在

Answer 1

当您希望等待一段时间后图像出现时，它非常有用。PyAutoGUI将继续制作屏幕截图并搜索图像，直到分钟搜索时间过去。 我从源代码中得到：

def locateOnScreen(image, minSearchTime=0, **kwargs): """minSearchTime - amount of time in seconds to repeat taking screenshots and trying to locate a match. The default of 0 performs a single search. """ start = time.time() while True: try: screenshotIm = screenshot(region=None) # the locateAll() function must handle cropping to return accurate coordinates, so don't pass a region here. retVal = locate(image, screenshotIm, **kwargs) try: screenshotIm.fp.close() except AttributeError: # Screenshots on Windows won't have an fp since they came from # ImageGrab, not a file. Screenshots on Linux will have fp set # to None since the file has been unlinked pass if retVal or time.time() - start > minSearchTime: return retVal except ImageNotFoundException: if time.time() - start > minSearchTime: raise ；