Having buttons load random scenes in Godot

extends Control

var scenes : Array = []
var path_to_scenes : String = "res://scenes"

func _ready():
	scenes = list_files_in_directory(path_to_scenes)
	var v_box_container_instance = VBoxContainer.new()
	add_child(v_box_container_instance)
	for i in 6:
		var button_instance = Button.new()
		button_instance.name = "Button" + str(i)
		button_instance.text = str(i)
		v_box_container_instance.add_child(button_instance)
		button_instance.connect("pressed", self, "_on_button_pressed", [i])

func load_scene( res ):

	var scene_instance = load( res ).instance()
	get_parent().add_child(scene_instance)

	queue_free() # may or maynot suit your needs

func list_files_in_directory(path):
	var files = []
	var dir = Directory.new()
	dir.open(path)
	dir.list_dir_begin()

	while true:
		var file = dir.get_next()
		if file == "":
			break
		elif file.ends_with(".tscn"):
			files.append(file)

	dir.list_dir_end()

	return files

func _on_button_pressed( value):
	#print( value ) # will most likely come in handy knowing which button was pressed
	load_scene( scenes[int(rand_range(0,scenes.size()))])