How to get the selected or highlighted object using NXOpen Python API?

Hi, Foad. How can I get the the list of selected or highlighted objects such bodies, faces, edges into the NXOpen Python code. I can do it using Block UI styler. But I need to get it directly without using Block Styler. I have searched a lot over the internet but there are not so many resources on NXOpen Python. Can you help me to figure it out?