def main(): sorter = Sorter() userInput = None while userInput != "": userInput = input("[Enter '' to quit]: ") if userInput != "": sorter.addNum(userInput) print("\n") sorter.printList() print("\n") userInput = None while userInput != "": userInput = input( "\n1. Insertion Sort \n2. Bubble Sort \n3. Selection Sort \n4. Shuffle \n> " ) print("\nList before selection:") sorter.printList() if userInput == "1": sorter.insertionSort() elif userInput == "2": sorter.bubbleSort() elif userInput == "3": sorter.selectionSort() elif userInput == "4": sorter.shuffle() elif userInput != "": print("invalid command") print("\nList before selection:") sorter.printList()