Still can not get the servos working

I can not figure out how to test Servo. All other tests are running as expected. When I run sudo python nothing happen.
Here are some data:

Do you have any servos connected? If you are testing with motors then you should know that they have safety features and will not respond to pwm directly. You need to send zero throttle PWM to them first for several seconds before they will “arm”.

Your comment has been very useful. Thank you.