gui.py

import tkinter as tk
from tkinter import messagebox
import re

def check_strength():
    password = entry.get()
    strength = 0
    msg = ""

    if len(password) >= 8:
        strength += 1
    else:
        msg += "Use at least 8 characters.\n"

    if re.search(r'[A-Z]', password) and re.search(r'[a-z]', password):
        strength += 1
    else:
        msg += "Use both uppercase and lowercase letters.\n"

    if re.search(r'\d', password):
        strength += 1
    else:
        msg += "Include numbers.\n"

    if re.search(r'[!@#$%^&*(),.?":{}|<>]', password):
        strength += 1
    else:
        msg += "Include special characters.\n"

    if strength == 4:
        messagebox.showinfo("Result", "Strong password 💪")
    elif strength == 3:
        messagebox.showinfo("Result", "Moderate password 😐\n" + msg)
    else:
        messagebox.showwarning("Result", "Weak password ⚠️\n" + msg)

# GUI setup
root = tk.Tk()
root.title("Password Strength Checker")
root.geometry("300x150")

label = tk.Label(root, text="Enter your password:")
label.pack()

entry = tk.Entry(root, show="*", width=30)
entry.pack()

btn = tk.Button(root, text="Check Strength", command=check_strength)
btn.pack()

root.mainloop()