#🔒 tkinter question

60 messages · Page 1 of 1 (latest)

serene waveBOT
#

@uncut fog

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hot nebula
#

depends on what you're talking about when you say "output field".. are you talking about a tkinter widget or in the console or what

# 

import tkinter as tk

def myfunction():
    text_widget.insert('end', 'hello world')

root = tk.Tk()

button = tk.Button(root, text='Click Me', command=lambda: myfunction())
button.pack()

text_widget = tk.Text(root)
text_widget.pack()

root.mainloop()
#

well yeah you have to create the widget, if that's what you want

#

you can do something like this too

import tkinter as tk

def myfunction():
    text_widget.insert('end', entry.get())

root = tk.Tk()

entry = tk.Entry(root)
entry.pack()

button = tk.Button(root, text='Click Me', command=lambda: myfunction())
button.pack()

text_widget = tk.Text(root)
text_widget.pack()

root.mainloop()
#

im just not sure what you're wanting to do

#

im guessing

# 
import tkinter as tk

def myfunction():
    text_widget.insert('end', entry.get())

root = tk.Tk()

entry = tk.Entry(root)
entry.pack()

button = tk.Button(root, text='Click Me', command=lambda: myfunction())
button.pack()

text_widget = tk.Text(root)
text_widget.pack()

root.mainloop()

Just use the previous example i gave you.. you can change "Click Me" to say "1" if you want to

olive stone
#

the first argument of insert is where it is to be inserted

#

"1" isn't a valid insert position

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Peanuts' example above uses 'end'

hot nebula
# 
import tkinter as tk

def myfunction():
    # don't change this
    text_widget.insert(end, entry.get())

root = tk.Tk()

entry = tk.Entry(root)
entry.pack()

# change this text field
button = tk.Button(root, text='1', command=lambda: myfunction())
button.pack()

text_widget = tk.Text(root)
text_widget.pack()

root.mainloop()
olive stone
#

then it would be text_widget.insert('end', '1')

hot nebula
#

right

olive stone
#

the entry was an example to show how to get the text from a different location, but if you only ever want "1" then no, you don't

#

No, there's a way to pass values into a function call from a button

hot nebula
#

no, you can just create 1 function with an argument

olive stone
#

you can use functools.partial

hot nebula
#

if you haven't learned basic python, you probably shouldn't be messing with Tkinter yet

#

well then you already know how then

olive stone
#

Do you know how to add a parameter to a function?

hot nebula
# 

import tkinter as tk

def myfunction(value):
    print(value)

root = tk.Tk()

button = tk.Button(root, text='1', command=lambda: myfunction(1))
button.pack()

button2 = tk.Button(root, text='2', command=lambda: myfunction(2))
button2.pack()

root.mainloop()
olive stone
#

this works as is, but if you wanted to use a loop to avoid repetition, this would break

hot nebula
#

he's just learning the basics

olive stone
#

just informing of the potential issue as its a very common issue people run into

hot nebula
#

i wouldn't ever use a loop to create the widgets, i'd draw them out like this instead

#

personal preference

olive stone
#

I would 100% use a loop to create them

hot nebula
#

so much more control if you dont use loops

olive stone
#

this is from a loop

#

there's no way I would type that out manually

#

especially if I wanted identical styling for each button

#

I'd much rather have 1 button created 10 times that I could edit instead of having to update 10 different buttons if I decide to change the style

#

I'd really recommend using Entry or Label to display the calculator output instead of Text

#

you absolutely can

#

show your full code

#

simply set a larger font on it

#

it will grow with the font

#

sticky is for the placement of the widget

#

justify is for the text placement within

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justify='right'

#

you never added the parameter to your function

#

Always take a moment to think about the error before asking for help. It will train your debugging skills.

#

always show your code

#

well your parameter is value, and you're doing value()

#

you can't call an int, just as the error is telling you

#

focus on one thing at a time

#

just get the buttons hooked up first

#

then you can worry about building the equations

viral spade
#

@olive stone when you are done would you be able to help me please?

olive stone
viral spade
#

ok

olive stone
#

Yes, but you might want more of a 3x3 grid like an actual calculator

#

there's still some logic you'll need to create for the display, like introducing . for decimals, or making sure you can't just enter 0 over and over

serene waveBOT
#
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