Using Python to Build a Calculator

Building a command-line calculator is an excellent project for practicing core Python skills. The design uses individual functions for each arithmetic task, which are then mapped to their corresponding symbols in a dictionary for easy look-up. A `while` loop creates a continuous experience, allowing users to chain operations by using the previous answer as the input for the next calculation. To start completely fresh, the program cleverly employs recursion by having its main function call itself again.