TkInter Text.insert

[P_Monty]

Hi folks - hoping this is a simple one.

I'm trying to draw a text box on the screen which I can use to display variable data. I've got:

Code: Select all

import tkinter
from tkinter import * (not sure why I need both these lines ...)
.
.
window=tkinter.Tk()
.
.
T=Text(window, height=2, width=20).grid(ow=6, column=6)
T.insert(END,"Hello")

I'll be honest and say I don't really know what I'm doing - these are snippets of code I've got from online tutorials which appear to do what I want.

However, at the very last line I get an error: 'NoneType' object has no attribute 'insert'.

Anyone know what's going on?

Thanks...

[davef21370]

http://www.python-course.eu/tkinter_text_widget.php
Dave.

[P_Monty]

Funny old thing, that's the one I copied.
That's why I don't understand what's wrong with the T.insert...

Thanks for replying

[scotty101]

Try this.

Code: Select all

import tkinter
from tkinter import * (not sure why I need both these lines ...)
.
.
window=tkinter.Tk()
.
.
T=Text(window, height=2, width=20)
T.grid(row=6, column=6)
T.insert(END,"Hello")

I've moved the creation of the text widget and placing it in the window using grid in to two separate lines.

[P_Monty]

Thanks all,
Breaking it over multiple lines did the trick. I don't know why, but it did ...

The missing 'r' is a typo as I copied the code from a VNC window into the main computer

[scotty101]

Consider the following example

Code: Select all

T = Button().grid()

This creates an instance of a button and calls it's .grid method and assigns the value returned by grid to T. The grid method return None. So T is none.

Now consider the next example.

Code: Select all

T = Button()
T.grid()

This creates an instance of a button and returns the object to be stored by T.
The next line calls the grid method of object T.