Prefix and postfix expressions are mathematical functions commonly used by calculators to perform calculation. A calculator does not compute the product of the integers 3 and 4 by processing “3 * 4” like a human does. Instead, it reads the expression in order of operations with the operands either preceding the numbers (* 3 4) or succeeding the numbers (3 4 *). FranceLab2 is a software module written in Python that converts given prefix expressions into their corresponding postfix expressions explicitly using recursive algorithms.