[Solved] How to Solve Python picamera and raspistill error

1. Frist turn on the raspberry pie settings sudo raspi-config
2. Then the options appers select the third interface option

3. After turning on all the options and restarting raspberry pie

4.vcgencmd get_camera

5. You can run the python picamera program and  execute raspistill

For example raspistill -o /home/pi/Desktop/first.jpg