Why code in python 3 wont work always?

Question

For example i have "code" that i wrote about year ago. Its bad but its might work.
import pyautogui

SCREEN = pyautogui.size()
POWER = 5
STEP = 32
sideX,sideY = SCREEN
sideX-=32
sideY-=32
zone = []
WORG=[sideX/POWER,sideY/POWER]
RGB=[0,0,0]
pyautogui.FAILSAFE = False
for partX in range(POWER):
for partY in range(POWER):
zone.append((WORG[0]*partX,WORG[1]*partY))
for Nom in zone:
X = Nom[0]
Y = Nom[1]
partX = WORG[0]+X
partY = WORG[1]+Y
while Y < partY:
while X < partX:
if pyautogui.pixelMatchesColor((int(X)) ,(int(Y)), RGB ,10):
print(X,Y)
pyautogui.moveTo(int(X),int(Y))
X+=STEP
X=Nom[0]
Y+=STEP

I try today launch it but its only work in 3 time. I use Python 3.8.10 (tags/v3.8.10:3d8993a, May 3 2021, 11:48:03) [MSC v.1928 64 bit (AMD64)] on win32. So i want to know "Why THIS code in python 3 wont work always?"

Answer 1

What do you mean by "didn't work"? Was it a logical error or a code error?

Answer 2

0.0 233.6
281.6 64.0
Traceback (most recent call last):
File "C:\Users\New Member\workjob\Pl.py", line 22, in <module>
if pyautogui.pixelMatchesColor((int(X)) ,(int(Y)), RGB ,10):
File "C:\Users\New Member\AppData\Local\Programs\Python\Python38\lib\site-packages\pyscreeze\__init__.py", line 607, in pixelMatchesColor
pix = pixel(x, y)
File "C:\Users\New Member\AppData\Local\Programs\Python\Python38\lib\site-packages\pyscreeze\__init__.py", line 597, in pixel
return (r, g, b)
File "C:\Users\New Member\AppData\Local\Programs\Python\Python38\lib\contextlib.py", line 120, in __exit__
next(self.gen)
File "C:\Users\New Member\AppData\Local\Programs\Python\Python38\lib\site-packages\pyscreeze\__init__.py", line 122, in __win32_openDC
raise WindowsError("windll.user32.ReleaseDC failed : return 0")
OSError: windll.user32.ReleaseDC failed : return 0