Let’s Build a Random Password Generator in Python using Tkinter- 2025

In this blog, we’ll see code for a Random Password Generator in Python using Tkinter library for a graphical user interface (GUI). This program allows users to generate a random password of their desired length and copy it to the clipboard for easy use.

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Let’s understand the Project:

Importing Required Libraries

from tkinter import *
import pyperclip
import random

• <strong>tkinter</strong> is used to create the GUI for the application.
• <strong>pyperclip</strong> allows copying the generated password to the clipboard.
• random is used to randomly generate characters for the password.

Creating the Main Application Window

app = Tk()
app.geometry("400x400")

• <strong>Tk()</strong> initializes the main application window.
• <strong>.geometry("400x400")</strong> sets the window size to 400×400 pixels.

Declaring Variables

generated_password = StringVar()
password_length = IntVar()
password_length.set(0)

1. generated_password stores the generated password as a string.
2. password_length is an integer variable to store the user-specified password length.
3. password_length.set(0) initializes the default value to 0.

Building the GUI Elements

Title Label

Label(app, text="Password Generator", font="calibri 20 bold").pack()

• Displays the title “Password Generator” with a bold Calibri font of size 20.

Input Field for Password Length

Label(app, text="Enter password length").pack(pady=3)
Entry(app, textvariable=password_length).pack(pady=3)

• A label prompts the user to enter the desired password length.
• An Entry field allows the user to input the length, which is stored in password_length.

Generate Password Button

Button(app, text="Generate", command=create_password).pack(pady=7)

• Clicking this button calls create_password() to generate a new password.

Displaying the Generated Password

Entry(app, textvariable=generated_password).pack(pady=3)

• Another Entry field displays the generated password.

Copy Password Button

Button(app, text="Copy", command=copy_password).pack()

• Clicking this button copies the generated password to the clipboard using copy_password().

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How It Works

1. The user enters the desired password length.
2. Clicking the “Generate” button creates a password of the specified length.
3. The generated password is displayed in a text field.
4. Clicking the “Copy” button copies the password to the clipboard.

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Complete Source Code: Random Password Generator in Python using Tkinter

from tkinter import *
import pyperclip
import random

app = Tk()
app.geometry("400x400")

generated_password = StringVar()
password_length = IntVar()
password_length.set(0)

def create_password():
    chars = ('abcdefghijklmnopqrstuvwxyz'
             'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
             '1234567890 !@#$%^&*()')
    
    new_password = "".join(random.choice(chars) for _ in range(password_length.get()))
    generated_password.set(new_password)

def copy_password():
    pyperclip.copy(generated_password.get())

Label(app, text="Password Generator", font="calibri 20 bold").pack()
Label(app, text="Enter password length").pack(pady=3)
Entry(app, textvariable=password_length).pack(pady=3)
Button(app, text="Generate", command=create_password).pack(pady=7)
Entry(app, textvariable=generated_password).pack(pady=3)
Button(app, text="Copy", command=copy_password).pack()

app.mainloop()

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Conclusion

This Random Password Generator in Python using Tkinter is a simple yet powerful tool for creating strong passwords. It provides an easy-to-use GUI and enables users to generate and copy passwords efficiently. By extending its functionality, you can make it even more secure and user-friendly.

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