09_02_ELIF.py

# Here's the code from yesterday, my beautiful lovely program that will also crash if you don't type a number in edit.
# Just kidding I fixed that :)
# But now we're gonna add some code so the program isn't constantly running through the entire WHILE loop looking for everything every time
# In other words, IF ELSE

from num2words import num2words

while True:
    user_decision_base = input("Type either Add, Show, Edit, Complete, Reset or Exit:")
    user_decision = user_decision_base.strip().casefold()
    list_decision = user_decision.split()

    with open("08_Save.txt", "r") as savefile:
        todos = savefile.readlines()
        todo = ()

        if "add" in user_decision:
            if len(list_decision) > 1:
                todo = user_decision_base[4:] +"\n"
            else:
                todo = input("Enter a To-Do Item:") + "\n"

            with open("08_Save.txt", "r") as savefile:
                todos = savefile.readlines()

            todos.append(todo)

            with open("08_Save.txt", "w") as savefile:
                savefile.writelines(todos)
                todo = todo.rstrip()

            print(f"Item {todo} added to your To-Do List.")

        elif "show" in user_decision or "display" in user_decision:

            print()
            for index, item in enumerate(todos):
                item = item.rstrip()
                row = f"{index + 1}: {item}"
                print(row)
            print(f"\nYour To-Do List is {num2words(len(todos))} items long.")
            print()

        elif "edit" in user_decision:
            while True:

                for index, item in enumerate(todos):
                    item = item.rstrip()
                    row = f"{index + 1}: {item}"
                    print(row)

                try:
                    number = int(input("Please enter the number of the To-Do Item you wish to edit:"))
                    number = number - 1

                    with open("08_Save.txt", "r") as savefile:
                        todos = savefile.readlines()

                    # Two ways of printing a variable in a line of code. Here's way #1, old school way.
                    print("You selected {}.".format(todos[number].rstrip()))

                    new_todo = input("Please enter the To-Do Item you wish to replace this item:")
                    todos[number] = new_todo + "\n"

                    # Here's the easier way to do it, as an "f-string literal" as auto-recommended by PyCharm.
                    print(f"Your new To-Do Item is {todos[number].rstrip()}.")

                    with open("08_Save.txt", "w") as savefile:
                        savefile.writelines(todos)
                        break

                except ValueError:
                    print("A non-integer response was provided. Please type Edit again, then enter the number of the To-Do Item you wish to edit.")

        elif "complete" in user_decision:
            while True:

                try:
                    number = int(input("Please enter the number of the To-Do Item you wish to mark as completed."))
                    removed = todos[number-1].rstrip()
                    todos.pop(number - 1)

                    with open("08_Save.txt", "w") as savefile:
                        savefile.writelines(todos)

                    message = f'To-Do Item "{removed}" was marked as complete, and thus removed from the list.'
                    print(message)
                    break

                except ValueError:
                    print("A non-integer response was provided.")
                    continue

        elif "reset" in user_decision:
            reset_choice = input("Continuing with Reset will erase all items from your To-Do List,\nleaving it totally blank. Continue?\nType YES if certain.")
            reset_choice = reset_choice.strip().casefold()

            if reset_choice == "yes":
                with open("08_Save.txt", "w+") as savefile:  #wow, w+ is dope
                    savefile.write("")
                    todos = savefile.readlines()

                print("Your To-Do List has been reset.")
                print(f"Your To-Do List is {num2words(len(todos))} items long.")

            else:
                print("Reset aborted.")

        elif "exit" in user_decision:
            break

        # elif list_decision[0] not in ("add", "show", "edit", "complete", "reset", "exit", "no"):
        #     print("You entered an unknown command.\n"
        #     "Please type either Add, Show, Edit, Complete, Reset or Exit:")


        else: # does this really have the exact same functionality as my complicated ELIF check up above? D'oh.
              # note that you cannot have conditionals in an else: statement. It's just else: and not else list_decision[0] not in...
            print("You entered an unknown command.\n"
            "Please type either Add, Show, Edit, Complete, Reset or Exit:")

print("Good bye!")