Welcome folks today in this post we will be generating a random color in hexadecimal code and change background color using random library in python. All the full source code of the application is shown below.

Get Started

In order to get started we need to install the following library using the pip command as shown below

pip install random

After installing the library make an app.py file and copy paste the following code

app.py

'''

This is the source code for making GUI in Python assignment

'''

# Import libraries
from tkinter import *
import random

# Initialize Tkinter
w = Tk()
w.title('Color')
w.geometry('300x200')
w['bg'] = '#ffffff'

# Variable
label_text = StringVar()
color_entry = StringVar()


# Functions to apply color
def apply_color():
    color = color_entry.get()
    w['bg'] = '#{}'.format(color)

# Function to random color generator
def generate_color():
    # randomize the hex code
    r = lambda: random.randint(0,255)
    color_entry.set('%02X%02X%02X' % (r(),r(),r()))

    # Apply color
    apply_color()

# Label
label = Label(
    w,
    textvariable=label_text,
    anchor=CENTER
)
label_text.set('Enter color hex code')
label.pack()

# Entry Widget
entry = Entry(
    w,
    textvariable=color_entry,
    width=20
)

entry.insert(0, 'ffffff')
entry.pack()

# Apply color button
button = Button(
    w,
    text='Apply',
    width=15,
    command=apply_color
)
button.pack()

# Random color generator button
# Button
button = Button(
    w,
    text='Random',
    width=15,
    command=generate_color
)
button.pack()

w.columnconfigure(0, weight=1)
w.rowconfigure(0, weight=1)
# Run the program infinitely
w.mainloop()

Now execute the above python script by typing the below command as shown below

python app.py

And now you can see that we are generating the random hex code and we have changed the background color inside the desktop app