a member not recognized in a method [closed]

Question

this is a class for designing a toplevel window with Tkinter the issue comes from the method which tries to get an info from the member self.lbox but it is not recognized as a member. the error is : NameError: name 'self' is not defined

additional question : I believe I can remove all 'self' prefixes in the member declaration. Am I correct ?

class Fen_Radioweb(Toplevel):
  "Fenêtre satellite contenant des contrôles de redimensionnement"
  def __init__(self,  **Arguments):
      Toplevel.__init__(self,  **Arguments)
      global window_height
      global window_width
      global x_cordinate 
      global y_cordinate 
      self.geometry("{}x{}+{}+{}".format(window_width, window_height, x_cordinate, y_cordinate))
      self.content1 = ttk.Frame(self)
      self.content1.grid(column=0, row=0)
      self.led_1=ttk.Button(self.content1, text='play',command=lambda:player.play())
      self.led_1.grid(column=1, row=0)
      self.led_2=ttk.Button(self.content1, text='stop',command=lambda:player.stop())
      self.led_2.grid(column=1, row=1)
      self.lbox=Listbox(self.content1, height=5,listvariable=cnames)
      self.lbox.bind('<Double-1>', self.change_channel)
      self.lbox.grid(column=2, row=2)
      
  def change_channel(*args):
      idxs = self.lbox.curselection()
      idx = int(idxs[0])
      global channel_ini
      channel_ini=idx
      url=liste_url[idx]
      media=instance.media_new(url)
      player.set_media(media)
      player.play()

I tried to remove self in idxs = self.lbox.... I tried to replace (*args) with (self) unsuccessfully

Answer 1

You're missing the self argument in the function's declaration:

def change_channel(self, *args):
    # Here---------^