camera.py

import cv2 as cv

class Camera:

    def __init__(self):
        self.camera = cv.VideoCapture(0)

        if not self.camera.isOpened():
            raise ValueError("Unable to open the camera!")

        # IMPORTANT: convert to int
        self.width = int(self.camera.get(cv.CAP_PROP_FRAME_WIDTH))
        self.height = int(self.camera.get(cv.CAP_PROP_FRAME_HEIGHT))

    def __del__(self):
        if self.camera.isOpened():
            self.camera.release()

    def get_frame(self):
        if self.camera.isOpened():
            ret, frame = self.camera.read()

            if ret:
                frame = cv.cvtColor(frame, cv.COLOR_BGR2RGB)
                return ret, frame

        return False, None