How to use a StringVar object in an Entry widget in Tkinter?

A StringVar object in Tkinter can help manage the value of a widget such as an Entry widget or a Label widget. You can assign a StringVar object to the textvariable of a widget. For example,

data = ['Car', 'Bus', 'Truck', 'Bike', 'Airplane'] var = StringVar(win) my_spinbox = Spinbox(win, values=data, textvariable=var)

Here, we created a list of strings followed by a StringVar object "var". Next, we assigned var to the textvariable of a Spinbox widget. To get the current value of the Spinbox, you can use var.get().

Example

The following example demonstrates how you can use a StringVar object in an Entry widget.

from tkinter import * top = Tk() top.geometry("700x300") top.title("StringVar Object in Entry Widget") var = StringVar(top) def submit(): Label2.config(text="Your User ID is: " +var.get(), font=("Calibri,15,Bold")) Label1 = Label(top, text='Your User ID:') Label1.grid(column=0, row=0, padx=(20,20), pady=(20,20)) myEntry = Entry(top, textvariable=var) myEntry.grid(column=1, row=0, padx=(20,20), pady=(20,20)) myButton = Button(top, text="Submit", command=submit) myButton.grid(column=2, row=0) Label2 = Label(top, font="Calibri,10") Label2.grid(column=0, row=1, columnspan=3) top.mainloop()

Output

It will produce the following output −