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pythoncolorspyautogui

pyautogui.pixelMatchesColor doesn't return True when parameters should return True

I want to be notified when certain parts of my screen turns white because that indicates that the page has completed loading and I can carry on. During debugging I realised that pyautogui.pixelMatchesColor doesn't return True when satisfying its parameters.

My original code:

import time
import pyautogui

def wait_until_white_detected_here(x, y):
    has_screen_loaded = 0
    while has_screen_loaded == 0:
        if pyautogui.pixelMatchesColor(x, y, (255, 255, 255)) == True:
            has_screen_loaded += 1
        else:
            time.sleep(0.1)

wait_until_white_detected_here(845, 129)

Further testing indicates that pyautogui.pixelMatch is reading from the correct (x, y) coordinates.

The part of the screen I was testing was actually white (i.e. RGB = 255, 255, 255). So I moved the screen to a purely white background (also RGB white) so that the (x, y) coordinates don't matter. But still it wasn't returning True.

My test code:

import pyautogui

while True:
if pyautogui.pixelMatchesColor(845, 129, (255, 255, 255)) == True:
    print("found")
else: print("Not found")
continue

Is it my code screwing up because of an error on my part, or is it just pyautogui? I have tried uninstalling and reinstalling the package, and still nothing happens.

Solution

  • Very late response, but for some reason this issue was limited to my MacBook, probably because it is a Retina model. This is apparently a known issue. Even though it showed up as (255, 255, 255) on my PC, it wasn't actually that on my Macbook. Solved by running im.getpixel((x, y)) on my Macbook instead.