Trying to get a variable from a function using tkinter

Question

I've been trying to get the printed output into a variable. Whenever I call the function it just simply repeats the button process. I tried to utilize global, but it doesn't seem to work.

Help pls thanks.

from tkinter import *
from tkinter import filedialog
import tkinter as tk

def openFile():
    filepath = filedialog.askopenfilename(title="Open for me")
    print(filepath)
    window.destroy()

window = tk.Tk()
window.title("Insert Excel File")
window.geometry("200x200")
button = Button(text="Open",command=openFile,height=3,width=10)
button.pack()
window.mainloop()

It worked for me. Nothing wrong with the oode.

user4136999
– user4136999

2022-05-26 16:01:15 +00:00
Commented May 26, 2022 at 16:01 — user4136999
– user4136999, Commented May 26, 2022 at 16:01

2293980990 · Accepted Answer · 2022-05-26 05:09:55Z

3

print , outputs the string to stdout it does not store the value in a variable, you'll need to store it yourself.

Since you're using a callback you can't return the value. The best way to implement this is to use classes, the bad way is to use a global variable to store the result

I'm assuming you are not familiar with classes, so a possible solution would be

from tkinter import *
from tkinter import filedialog
import tkinter as tk

path = ""
def openFile():
    global path
    path = filedialog.askopenfilename(title="Open for me")
    window.destroy()

window = tk.Tk()
window.title("Insert Excel File")
window.geometry("200x200")
button = Button(text="Open",command=openFile,height=3,width=10)
button.pack()
window.mainloop()

# do something with path e.g. print
print(path)

answered May 26, 2022 at 5:09

2293980990

2952 silver badges11 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Ominpathy Over a year ago

Thanks, is it possible you can show me the way with classes?

2293980990 Over a year ago

I won't show you straight away. If you want to learn about classes this is a good hands-on tutorial to begin with. Then try this to learn how the same concepts are applied in Tkinter. Then if you are still stuck, ask a new question. Good luck

Collectives™ on Stack Overflow

Trying to get a variable from a function using tkinter

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related