我已经回顾了其他问题,例如(Python 'if x is None' not catching NoneType),但我没有发现这些信息可用于我的方案。
import pyautogui
##########################
#This is a looping routine to search for the current image and return its coordinates
##########################
def finder(passedImage, workSpace): #start the finder func
print (passedImage) #print the image to be found
currentImage = pyautogui.locateOnScreen(passedImage,region=(workSpace), grayscale=True) #search for the image on the screen
if currentImage == None: # if that initial search goes "none" ...
print ("Looking") #Let us know we are looking
finder(passedImage,workSpace) #go and do the function again
print(currentImage) #print out the coordinates
currentImageX, currentImageY = pyautogui.center(currentImage) #get the X and Y coord
pyautogui.click(currentImageX, currentImageY) #use the X and Y coords for where to click
print(currentImageX, currentImageY) #print the X and Y coords
这个想法很简单。只是找到图像的坐标,然后使用pyautogui库点击它(模块?对我来说是新术语)
除了“if currentImage == None:”位之外,这一切都有效。
有时候当currentImage为None时会捕获,然后适当地重新运行该函数以获取它,但有时则不会。我似乎无法找到任何押韵或背后的原因,有时候工作,其他时间没有。
关于如何检查“无”然后回应“无”的任何建议都会很棒:)
抛出的示例错误如下:
Traceback (most recent call last):
File "fsr_main_001.py", line 57, in <module>
newItem()
File "fsr_main_001.py", line 14, in newItem
finder.finder(passedImage,workSpace)
File "/home/tvorac/python/formAutomation/finder.py", line 14, in finder
currentImageX, currentImageY = pyautogui.center(currentImage) #get the X and Y coord
File "/usr/local/lib/python3.5/dist-packages/pyscreeze/__init__.py", line 398, in center
return (coords[0] + int(coords[2] / 2), coords[1] + int(coords[3] / 2))
TypeError: 'NoneType' object is not subscriptable
答案 0 :(得分:1)
我认为发生的事情是当你说你重新运行这个功能时,你会递归地这样做。新呼叫return
后,finder
没有if currentImage == None: # if that initial search goes "none" ...
print ("Looking") #Let us know we are looking
finder(passedImage,workSpace) #go and do the function again
print(currentImage) #print out the coordinates
:
finder()
一旦currentImage
调用完成了它的操作,控制将返回到None
为pyautogui.center
的函数实例,并继续执行打印,currentImage = None
while currentImage is None:
currentImage = pyautogui.locateOnScreen(passedImage,region=(workSpace), grayscale=True) #search for the image on the screen
等等。
鉴于这可能会导致一些非常深刻的递归,它可能不是找到图像的最佳方法。相反,某种循环是最好的。
for
(或类似的东西,增加了超时,最大重试次数等)