🔒 tkinter help

[delicate path]

my goal with this code is make something on the screen at the touch of a button (in this case make a text appear) and be able to clear it once i touch another button (using frame clear)

import tkinter as tk

def clear_all_inside_frame():
    for widget in frame1.winfo_children():
        widget.destroy()  

def testo():
    text="testo"
    text_output = tk.Label(frame1, text=text, fg="red", font=("Helvetica", 16))
    text_output.grid(row=0, column=1)

root = tk.Tk()
root.title("clear frame")
root.geometry("400x200")
# Frame 
frame1 = tk.Frame(root, width=300, height=100)
frame1.pack()

btn1 = tk.Button(root, text="This is a button inside frame", command=testo())
btn1.pack()

clear_button = tk.Button(root,text="Clear all",command=clear_all_inside_frame)
clear_button.pack(pady=25)
root.mainloop()```
this is my code, once i run it the text alredy appears (without needing to touch the button). once i touch the clear button it clears the text but it dosent re-appear even if i touch the first button.

[silk vapor]

@delicate path

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[warm stream]

Once a widget is destroyed, it cannot be added again. Instead you can unpack them

[delicate path]

Why? Can you explain a little bit more what you mean with unpack them?

Sorry if I ask but I am very new to tkinter and I am trying to understand it for a project I need to do for school

[warm stream]

Because you are literally destroying the object when you use the destroy method

Instead of destroy, use pack_forget

It keeps the widget intact but removes it

It's usually a good idea to pit everything you want to show/hide into a single frame and just pack/pack_forget that. That way you don't have to do every child

[delicate path]

But can I use the same space for 2 frames?

Also, is it right to think a frame like a div?

Or are they 2 opposite things

[warm stream]

yes exactly

it's a container that can hold other widgets

you can use the same space for 2 frames, as long as you unpack one before you pack the other

[delicate path]

And what does it mean to pack something? Show it at the screen?

[warm stream]

Yes, sort of.

When we create a widget, we have 3 ways we can then display it

pack
grid
place

pack simply adds it below the previous widget. It has a few extra options for adjusting how it aligns to things, but in general, it adds it next to the previously added widget

grid lets you specify rows and columns for a bit more control of the overall layout

place is for absolute pixel placement and should generally be avoided except very specific situations

you cannot mix pack and grid within the same frame. Once something has been packed, you cannot then grid something to that same frame

but, you can nest frames, so you can have a frame with gridded widgets, and that frame can be packed somewhere else

[delicate path]

Oh ok, I think I understand

[warm stream]

This is a really important part of UI design

[delicate path]

So let's say that I have 2 packed widgets. The second one is going to be directly under the first. Like it does with divs

[warm stream]

yeah

[delicate path]

And I can modify this by putting them side by side controlling the placement

Using grid

[warm stream]

you can pack something side by side too

if you just want a row or column of widgets, use pack

if you want something a bit more versatile, use a grid

something like this is grid

column 0 is the radiobutton, column 1 is the label, column 2 is the entry

or something like a calculator would be great for grid

[delicate path]

Oh ok, I am starting to understand

I will try

[warm stream]

something I like to do is give my frames a background colour. It makes it a lot easier to visualize the space they take up

[delicate path]

Yeah it was I was thibking to do, because I worked a lot with divs in html, and that's how I learned to use them (by moving stuff etc.)

[warm stream]

Is this for school or are you just learning on your own?

[delicate path]

its for school

but i have 0 text book material

[warm stream]

.rp tkinter

[placid sigil]

Search results - Real Python

Here are the top 5 results:

Python GUI Programming: Your Tkinter Tutorial

https://realpython.com/python-gui-tkinter/

Build a Tic-Tac-Toe Game With Python and Tkinter

https://realpython.com/tic-tac-toe-python/

Bypassing the GIL for Parallel Processing in Python

https://realpython.com/python-parallel-processing/

Python sleep(): How to Add Time Delays to Your Code

https://realpython.com/python-sleep/

Arduino With Python: How to Get Started

https://realpython.com/arduino-python/

Click the links to go to the articles.

[warm stream]

I recommend this first article as a good intro

[delicate path]

literally the teacher said "connect access with python and create a database viewer using ui"

after my quesion "what library do we have to use" the answer was "idk, use what you prefer"

[delicate path]

ty!

[silk vapor]

Python help channel closed for inactivity

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