How to Add a Border for a Frame in Python Tkinter

The requested feature is not called a border in Tkinter. It is called a highlight.

To get the above request, set highlightbackground="black" and highlightthickness=1.

(The border is the empty space reserved around the frame) Additional information is available in documentation.)

In the documentation, look at the styles you can apply to a frame using Tkinter: Tkinter Frame Widget

Here is how you do this:

import tkinter as tk
#tk.Frame(master, **config-options)

my_frame = tk.Frame(parent_widget, borderwidth = 1)

from tkinter import *
root = Tk()
frame1 = Frame(root, highlightbackground="blue", highlightthickness=1,width=600, height=100, bd= 0)
frame1.pack()
root.mainloop()

• change the options accordingly

• highlightbackground is used to change the color of the widget in focus

• highlightthickness is used to specify the thickness of the border around the widget in focus.

You can use relief and borderwidth like this.

from tkinter import *    
root = Tk()
frame1 = Frame(root, width=400, height=660, bg="White", borderwidth=1, relief=RIDGE)
frame1.place(relx=0.7, y=80)
root.mainloop()

I have tried like:

frame_left = tk.Frame(window, width=100, height=360, bg="blue", borderwidth=1, relief=tk.RIDGE)
frame_left.pack(side=tk.LEFT, fill=tk.BOTH, expand=1)
frame_right = tk.Frame(window, highlightbackground="green", highlightthickness=10, width=100, height=100, bd=0)
frame_right.pack(side=tk.RIGHT, fill=tk.BOTH, expand=1)

See the link below to for what the output of the above code looks like: