menu while loop

[BashBedlam]

@BashBedlam With very little work, you could make Menu_Tree.run_menus() non recursive. Also add the possibility that after command(), the menu to run is not the main_menu.

This would be my best shot at that

def dummy_function () :
	print ('\n   The dummy function has finished running.')

def say_goodbye () :
	print ('\nBye for now.')
	exit ()

class Menu_Tree :
	def __init__ (self) :
		self.all_menus = {
			'main_menu' : {
				"[1] Products": 'products_menu',
				"[2] Clients": 'clients_menu',
				"[3] Display": 'display_menu',
				'[4] Report': 'report_menu',
				"[0] Exit the program.": say_goodbye},
			'products_menu' : {
				"[1] Add new product": dummy_function,
				"[2] Product update": dummy_function,
				"[3] Delete product": dummy_function,
				'[4] Go back to main page': 'main_menu',
				"[0] Exit the program.": say_goodbye},
			'clients_menu' : {
				"[1] Add new client": dummy_function,
				"[2] Client update": dummy_function,
				"[3] Delete client": dummy_function,
				'[4] Go back to main page': 'main_menu',
				"[0] Exit the program.": say_goodbye},
			'display_menu' : {
				"[1] Search list of: ": dummy_function,
				"[2] Search a: ": dummy_function,
				'[4] Go back to main page': 'main_menu',
				"[0] Exit the program.": say_goodbye},
			'report_menu' : {
				"[1] Average age of clients: ": dummy_function,
				"[2] The average price of the products ": dummy_function,
				'[4] Return to the main menu': 'main_menu',
				"[0] Exit the program.": say_goodbye}}

		self.run_the_current_command ('main_menu')

	def run_the_current_command (self, command) :
		if type (command) == str :
			self.current_menu = command
			command = self.run_the_menus (self.all_menus [command])
		else :
			command ()
			self.run_the_menus (self.all_menus [self.current_menu])

	def run_the_menus (self, menu) :
		look_up_table = {label [1: 2]: label for label in menu}

		print ('\n   ==============================')
		for label in menu :
			print ('     ', label)

		still_selecting = True
		while  still_selecting :
			menu_choice = input ('   Enter your selection: ')
			if menu_choice != '' and menu_choice in look_up_table :
				still_selecting = False
				command = menu [look_up_table [menu_choice]]
			else :
				print (f'     "{menu_choice}" is not a valid entry.')

		self.run_the_current_command (command)

if __name__ == '__main__' :
	Menu_Tree ()