Write a python program to read age from user and calculate and display the year when the user's age was half of his/her current age. Note: the current year is 2020. For example: Enter your age: 37 You were half of your age in 2002. Identify which of the followings is computational thinking. Thinking how turtle library helps drawing different shapes. ( Thinking how a computer program works. Thought processes and approaches to help to solve a complex problen Writing code in a programming language