Click Photo using Opencv

 import cv2

cam = cv2.VideoCapture(0)

cv2.namedWindow("python webcam screenshot app")

img_counter = 0

while True:

    ret,frame = cam.read()

    if not ret:

        print("failed to grab frame")

        break

    cv2.imshow("test",frame)

    k = cv2.waitKey(1)

    if k%256 == 27:

        print("Escape hit,closing the app")

        break

    elif k%256==32:

        img_name = "opencv_frame_{}.png".format(img_counter)

        cv2.imwrite(img_name,frame)

        print("screenshot taken")

        img_counter+=1

cam.release()

cv2.destroyAllWindows()