[FIXED] How to get text from Tkinter Text widget in Jupyter notebook?

Issue

I have a simple GUI code using tkinter in Jupyter:

from tkinter import *

root = Tk()
text = Text(root, width = 40, height = 15)
text.pack()
root.mainloop()

How can I get user inputted text?
If I add text.get('1.0', 'end') to the end of that code, it does not work, also when I add text.get('1.0', 'end') to another cell it doesn't start executing until I close the root window and after that it gives an error.
Like this:

In[1]: from tkinter import *
       root = Tk()
       text = Text(root, width = 40, height = 15)
       text.pack()
       root.mainloop()

In[2]: text.get('1.0', 'end')

In[2] does not start executing until I close the Tk() window, and after closing the window and start running In[2] it gives this error:

TclError: invalid command name ".!text"

Solution

You cannot interact with a tkinter mainloop from the ipython interactive.
If you add a get text button, pressing it will retrieve the text widget content:

Like this:

import tkinter as tk
root = tk.Tk()
text = tk.Text(root, width=40, height = 15)
text.pack()
tk.Button(root, text='get text', command=lambda: print(text.get('1.0', tk.END))).pack()
root.mainloop()

Answered By - Reblochon Masque