How to create a menu system for a console, terminal application - python-3.x

Question

I looked for "How to create a menu system for a console, terminal application". None of the proposed Similar questions fully answered my goal.
Add a menu to a console application to manage activities.
Run a selected function.
Clear the output
Display the menu again or exit if done is selected
Therefore, I am approaching this as a Q&A format. It’s OK to Ask and Answer Your Own Questions
Suggested better answers are welcomed.

Answer 1

"""
1. Add a menu to a console application to manage activities.
2. Run a selected function.
3. Clear the output
4. Display the menu again or exit if done is selected
"""
import sys
from os import system
def display_menu(menu):
"""
Display a menu where the key identifies the name of a function.
:param menu: dictionary, key identifies a value which is a function name
:return:
"""
for k, function in menu.items():
print(k, function.__name__)
def one():
print("you have selected menu option one") # Simulate function output.
input("Press Enter to Continue\n")
system('cls') # clears stdout
def two():
print("you have selected menu option two") # Simulate function output.
input("Press Enter to Continue\n")
system('cls') # clears stdout
def three():
print("you have selected menu option three") # Simulate function output.
input("Press Enter to Continue\n")
system('cls') # clears stdout
def done():
system('cls') # clears stdout
print("Goodbye")
sys.exit()
def main():
# Create a menu dictionary where the key is an integer number and the
# value is a function name.
functions_names = [one, two, three, done]
menu_items = dict(enumerate(functions_names, start=1))
while True:
display_menu(menu_items)
selection = int(
input("Please enter your selection number: ")) # Get function key
selected_value = menu_items[selection] # Gets the function name
selected_value() # add parentheses to call the function
if __name__ == "__main__":
main()

Answer 2

I am looking for a similar functionality and found this package: console_menu on PyPI. I haven't tried it out yet but apparently it should be simple to use. I copy their documentation example below.
# Import the necessary packages
from consolemenu import *
from consolemenu.items import *
# Create the menu
menu = ConsoleMenu("Title", "Subtitle")
# Create some items
# MenuItem is the base class for all items, it doesn't do anything when selected
menu_item = MenuItem("Menu Item")
# A FunctionItem runs a Python function when selected
function_item = FunctionItem("Call a Python function", input, ["Enter an input"])
# A CommandItem runs a console command
command_item = CommandItem("Run a console command", "touch hello.txt")
# A SelectionMenu constructs a menu from a list of strings
selection_menu = SelectionMenu(["item1", "item2", "item3"])
# A SubmenuItem lets you add a menu (the selection_menu above, for example)
# as a submenu of another menu
submenu_item = SubmenuItem("Submenu item", selection_menu, menu)
# Once we're done creating them, we just add the items to the menu
menu.append_item(menu_item)
menu.append_item(function_item)
menu.append_item(command_item)
menu.append_item(submenu_item)
# Finally, we call show to show the menu and allow the user to interact
menu.show()