install cv2 libraries using the command

-->> pip install opencv-python

Download gender_net.caffemodel using below link:

-->>> https://drive.google.com/file/d/1lwuOb3oiT5WliLN6vr41L7ZuGlIAAlx3/view?usp=drivesdk

Download age_net.caffemodel using below link

-->>> https://drive.google.com/file/d/1kW9A5Dudgi2EIe0v8thLjnRXTygB_RQ8/view?usp=drivesdk