[Tkinter] How to update widgets?

[deanhystad]

I already gave you an example that does exactly what you are asking and the example was based on your code.

https://python-forum.io/Thread-Tkinter-H...#pid134606

This code in particular:

def search(event):
    name = search_box.get()
    unit = units.get(name)
    if unit:
        result_text['text'] = f'Physical quantity :  {name}\nUnit :  {unit[0]}\nSymbol :  {unit[1]}'
    else:
        result_text['text'] = f'Unit "{name}" not found'
    search_box.delete(0, END)

In particular lines 5 or 7.

In addition to this method you could use "result_text.configure(text='whatever text goes in label')

You could also create a tkinter StringVar() and assign this as the textvariable when creating the label.

result_text = StringVar()
Label(results, textvariable = result_text, width= 40, height=3).pack()
..
def search(event):
    name = search_box.get()
    unit = units.get(name)
    if unit:
        result_text.set(f'Physical quantity :  {name}\nUnit :  {unit[0]}\nSymbol :  {unit[1]}')
    else:
        result_text.set(f'Unit "{name}" not found')
    search_box.delete(0, END)