CODEWITHSUNDEEP
pythonuser-interfacetkinter
Ilan Rossler
Ilan Rossler

Reputation: 33

Tcl Error in Tkinter "Invalid command name"

I'm trying to build an IA with a graphic interface with Tkinter, but when i'm running my code, write something into the User space and press Enter, i got this error :

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python33\lib\tkinter\__init__.py", line 1482, in __call__
    return self.func(*args)
  File "C:\Users\Ilan\Desktop\Python\ProjetIa\IA 2.0\GUI.pyw", line 53, in Enter_pressed
    self.text.config(state='normal')
  File "C:\Python33\lib\tkinter\__init__.py", line 1270, in configure
    return self._configure('configure', cnf, kw)
  File "C:\Python33\lib\tkinter\__init__.py", line 1261, in _configure
    self.tk.call(_flatten((self._w, cmd)) + self._options(cnf))
_tkinter.TclError: invalid command name ".56241624.56241736"

This is my code

GUI :

from tkinter import *
from tkinter import font

input_get = ""
ia_answers = ""

class TextFrame(Frame):
   def __init__(self, window, **kwargs):
    """Init the main top frame who contains the discussion"""
    LabelFrame.__init__(self, window, text="Discussion",borderwidth = 15, height = 200, width = 200)
    self.pack(fill=BOTH, side=TOP, expand = True)

    # Font options
    self.printopt = font.Font(family = "Times")

    # Create the Text widget, who contains the discussion, it is append by the Enter_pressed function
    self.text = Text(self, state='disabled', bg ="grey")
    self.text.pack(fill = BOTH, expand = True, side = "left")

    # Tag for the justify options on the text
    self.text.tag_configure("right", justify="right", font=self.printopt)
    self.text.tag_configure("left", justify="left", font=self.printopt)

    # Put the Scrollbar and his options
    self.scr = Scrollbar(self)
    self.scr.config(command=self.text.yview)
    self.text.config(yscrollcommand=self.scr.set)
    self.scr.pack(side="right", fill="y", expand=False)

class InputFrame(TextFrame):
  def __init__(self, window, **kwargs):
    """Init the main bottom frame who contains the user input box """

    # Import the parent class (Textframe)modules
    TextFrame.__init__(self,window)
    LabelFrame.__init__(self, window, text="User :", borderwidth=4)
    self.pack(fill=BOTH, side=BOTTOM)

    # Create the input box for the user
    self.input_user = StringVar()
    self.input_field = Entry(self)
    self.input_field.pack(fill=BOTH, side=BOTTOM)

    def Enter_pressed(event):
     """Took the current string in the Entry field.""" 
     # Take the globals variables
     global input_get
     global ia_answers
     # Take the input of the user in the input box
     self.input_get = self.input_field.get()
     self.input_field.delete(0, 1000)
     # Put the text in state normal then add the variables finally put it in disabled mode
     self.text.config(state='normal')
     self.text.insert("end", "\n"+input_get+"\n", "left")
     self.text.insert("end", "\n"+ia_answers+"\n", "right")
     self.text.config(state='disabled')
     # Scroll automatically to the bottom of the window
     self.text.yview(END)
    self.input_field.bind("<Return>", Enter_pressed)

And this is my mainscript

Mainscript :

import GUI
from GUI import *
from tkinter import *
window = Tk()
TextFrame(window)
InputFrame(window)
window.mainloop()

Thank you in advance. Ilan

Upvotes: 0

Views: 2133

Answers (1)

Bryan Oakley
Bryan Oakley

Reputation: 386335

The problem lies in the fact that you are constructing your classes incorrectly. Look at this code:

class TextFrame(Frame):
   def __init__(self, window, **kwargs):
    ...
    LabelFrame.__init__(self, window, text="Discussion",borderwidth = 15, height = 200, width = 200)
    ...

You are inheriting from Frame, but are calling the constructor of LabelFrame. This is not causing your problem, but it is incorrect and should be fixed. You need to either inherit from LabelFrame, or call the Frame constructor.

Also, take a look at this code:

class InputFrame(TextFrame):
  def __init__(self, window, **kwargs):
    ...
    TextFrame.__init__(self,window)
    LabelFrame.__init__(self, window, text="User :", borderwidth=4)
    ...

In the above code, you inherit from TextFrame and correctly call the constructor for TextFrame, but you also call the constructor for LabelFrame. That call to LabelFrame.__init__ is what is causing your invalid command name error. You need to remove that line of code.

However, it's not clear if you really intend to inherit from TextFrame, or if you intend to inherit from LabelFrame. Whichever one you inherit from, you need to call that class's __init__ method.

Upvotes: 1

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