Python Display OpenCV Video Windows10，设备名称正确

import cv2

def display_video(device_name):
    cap = cv2.VideoCapture(device_name)

    while True:
        ret, frame = cap.read()

        if not ret:
            break

        cv2.imshow('Video', frame)

        if cv2.waitKey(1) & 0xFF == ord('q'):
            break

    cap.release()
    cv2.destroyAllWindows()

# 获取设备名称列表
def get_device_names():
    devices = []
    for i in range(10):
        cap = cv2.VideoCapture(i)
        if cap.isOpened():
            devices.append(f"Device {i}")
            cap.release()
    return devices

# 选择正确的设备名称
device_names = get_device_names()
if len(device_names) > 0:
    device_name = device_names[0]
    display_video(device_name)
else:
    print("No video devices found.")