获取_tkinter.TclError：tkinter中的未知选项“-relief”错误

Question

I'm trying to make a simple calculator but when I try to configure my entry with 'relief' method it is showing the error _tkinter.TclError: unknown option "-relief" .

I don't know why this is showing this error

import tkinter as tk
from tkinter import ttk

win = tk.Tk()
win.geometry('400x400')
win.title('Simple Calculator')
win.configure(bg='Peach puff')
value = tk.StringVar()
entry = ttk.Entry(win, font=('Helvetica', 35, 'bold'), justify='right', textvariable=value, relief=tk.SUNKEN)
entry.pack(padx=30, pady=15, side='top', fill='both')

def spin():
    pass

button_images = {'one': tk.PhotoImage(file=r'C:\Users\hruthik\Desktop\Pics\numbers\one.png')}
b_one = ttk.Button(win, image=button_images['one'], command=spin, borderwidth=0)
b_one.pack(pady=20)
win.resizable(False, False)
win.mainloop()

Answer 1

The ttk package widgets have different options than the standard tkinter widgets. For example, the ttk.Entry widget has no option for relief, and the ttk.Button widget has no option for borderwidth. Try using the tk.Entry and tk.Button widgets instead, if you want to specify these options

import tkinter as tk
from tkinter import ttk

win = tk.Tk()
win.geometry('400x400')
win.title('Simple Calculator')
win.configure(bg='Peach puff')
value = tk.StringVar()
entry = tk.Entry(win, font=('Helvetica', 35, 'bold'), justify='right', textvariable=value, relief=tk.SUNKEN)
entry.pack(padx=30, pady=15, side='top', fill='both')


def spin():
    pass


button_images = {'one': tk.PhotoImage(file=r'C:\Users\hruthik\Desktop\Pics\numbers\one.png')}
b_one = tk.Button(win, image=button_images['one'], command=spin, borderwidth=0)
b_one.pack(pady=20)
win.resizable(False, False)
win.mainloop()