Sum of Combobox & Text widget inputs

Tkinter Combobox

Adding Combobox and Text widget values

Adding combobox with selection options

sel1=tk.IntVar() # string variable 
sel1.set(0)
data=[5,3,15,22]
cb1 = ttk.Combobox(my_w, values=data,height=3, width=5,
    font=22, textvariable=sel1)
cb1.grid(row=0,column=0,padx=10,pady=30)

On click of the button

Here we are using click event of the button to trigger the function my_upd().
b1=tk.Button(my_w,text='Sum',command=lambda:my_upd(),font=22)

Reading and adding values

We collect the input values from Combobox and from the Text widget , then add these two values.
By using config() we will update the Label to display the sum of the values.
def my_upd(*args):
    total=sel1.get() + int(t1.get("1.0",END))
    l1.config(text=total)# update the Label text 
Tkinter adding combobox selection and text widget value and displaying the sum in a Label


Full code is here
import tkinter as tk
from tkinter import ttk
from tkinter import *
my_w = tk.Tk()
my_w.geometry("400x250")  # Size of the window 
my_w.title("www.plus2net.com")  # Adding a title
def my_upd(*args):
    total=sel1.get() + int(t1.get("1.0",END))
    l1.config(text=total) # update the Label text 

sel1=tk.IntVar() # string variable 
sel1.set(0)
data=[5,3,15,22]
cb1 = ttk.Combobox(my_w, values=data,height=3, 
	width=5,font=22, textvariable=sel1)
cb1.grid(row=0,column=0,padx=10,pady=10)
t1=tk.Text(my_w,width=10,height=1,bg='yellow',font=22)
t1.grid(row=0,column=1,padx=5)
t1.insert(tk.END, 0) # initial value of text widget 
l1=tk.Label(my_w,text='Total',font=22,fg='blue')
l1.grid(row=0,column=2,padx=5)
b1=tk.Button(my_w,text='Sum',command=lambda:my_upd(),font=22)
b1.grid(row=1,column=1)
#sel1.trace('w',my_upd) # to trigger the function on change 
my_w.mainloop()  # Keep the window open
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    29-07-2022

    Dear Sir,
    Thank you for your good instructions. I learn a lot from your videos.
    One question:
    how to delete the combobox option dynamicly?
    i was unable to use cb1['values'] -=(e1.get(),) to delete the option.
    please kindly teach me how to do it.

    Thank you very much.
    I subcribed your yourtube already.

    ST

    05-08-2022

    You can't delete by using cb1['values'] -=(e1.get(),) as it is a tuple. Create a new tuple with all the options except the one you want to delete. Then assign the new tuple to cb1.
    This part is added to this page. Here is the video again.

    https://youtu.be/PICzrYI6O9A

    Post your comments , suggestion , error , requirements etc here





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