pypbl.py

import cv2
import pickle

width, height = 107 ,46

try:
    with open('CarParkingPos', 'rb') as f:
        posList = pickle.load(f)
except:
    posList = []

def mouseClick(event,x,y,flags,param):
    if event == cv2.EVENT_LBUTTONDOWN:
        posList.append((x,y))
    if event == cv2.EVENT_RBUTTONDOWN:
        for i, pos in enumerate(posList):
            x1, y1 = pos
            if x1 < x and x < x1+width and y1 < y and y < y+height:
                posList.pop(i)

    with open('CarParkingPos','wb') as f:
        pickle.dump(posList,f)


while True:
    img = cv2.imread("carParkimg.png")
    for pos in posList:
        cv2.rectangle(img,pos,(pos[0]+width,pos[1]+height),(255,0,255),2)


    cv2.imshow("Image",img)
    cv2.setMouseCallback("Image",mouseClick)
    cv2.waitKey(1)
finalist = poslist