save webcam capture image

webcam_save.py

import cv2
import numpy as np
import time

cap = cv2.VideoCapture(0)
while not cap.isOpened():
    print("Reset")
    time.sleep(0.1)
    cap = cv2.VideoCapture(0)

try:
    while(True):
        ret, frame = cap.read()
        randomname = time.strftime("%Y%m%d%H%M%S") + \
                     "{:03}".format(round(time.time() * 1000) % 1000)
        cv2.imwrite("image/image_" + randomname + '.jpg', frame)
        time.sleep(0.33)
finally:
    cap.release()