[Tkinter] Delete an object created from another class

[alan9979]

Thanks, I don't understand yet. So if I don't add "self.readlin=..", how can it be deleted ?

from tkinter import *

class FaceDom(object):
	def __init__(self, can):
		self.can =can
		self.can.create_line(10, 10, 90, 90, fill ='red',width=5)
	
class Projet(Frame):
	def __init__(self, larg, haut):
		Frame.__init__(self)
		self.larg, self.haut = larg, haut
		self.can = Canvas(self, bg='dark green', width =larg, height =haut)
		self.can.pack()
		bList = [("ligne", self.butA),("Delete",self.butB)]
		for b in bList:
			Button(self, text =b[0], command =b[1]).pack()
		self.pack()

	def butA(self):		
		self.x=FaceDom(self.can)
		print(self.x)

	def butB(self):
		self.can.delete(self.x)
		
Projet(100, 100).mainloop()