How to find a color image on the screen?

Question

Python

I already know how to display Hello Word. But knowledge is still not enough .. the opinion of the people involved is needed.
Task: Is the desired image on the screen. If so, press the button.
the desired image is accurate, up to a pixel, but up to a color pixel (i.e. the desired image will definitely be in geometry, but you need to find the desired color for a dash of a hue). no matter where it is. the fact that if or not is important. you can get the image through ImageGrab ... and then the author is too stupid.
In theory, you can use cv2.matchTemplate. but I don't care about coordinates. Yes, and attempts to build code on matchTemplate gives long processing.
Question: is it very clumsy, easy, and most importantly fast (the desired result update period is less than a second) to complete the following task
If ThenWhatIDon'tKnow.SuperFunction(Screen,DesiredImage) = True
Some action
of the PS I ask you not to throw slippers and other traumatic objects, but you can buy some manuals and advice.
World

Answer 1

The PyAutoGui locateOnScreen() function performs an immediate search on the screen, you can also use the module to hover over and click