Create Account and Login with Python

# Import tkinter and json modules
import tkinter as tk
import json

# Create a root window
root = tk.Tk()

# Set the window title
root.title("Welcome")

# Set the window size
root.geometry("300x200")

# Create a function to save the user data to a json file
def save_user_data(username, password, filename="Accounts1.json"):
    # Create a dictionary with the user data
    user_data = {"username": username, "password": password}
    # Try to open the file and append the user data
    try:
        with open(filename, "r+") as file:
            # Load the existing data
            file_data = json.load(file)
            # Append the new user data
            file_data["users"].append(user_data)
            # Seek to the beginning of the file
            file.seek(0)
            # Dump the updated data
            json.dump(file_data, file, indent=4)
    # If the file does not exist, create a new file with the user data
    except FileNotFoundError:
        with open(filename, "w") as file:
            # Create a dictionary with a list of users
            file_data = {"users": [user_data]}
            # Dump the data to the file
            json.dump(file_data, file, indent=4)

# Create a function to open a new window for creating an account
def create_account():
    # Create a top-level window
    account_window = tk.Toplevel(root)
    # Set the window title
    account_window.title("Create Account")
    # Set the window size
    account_window.geometry("300x200")
    # Create a label for username
    username_label = tk.Label(account_window, text="Username:")
    # Create an entry box for username
    username_entry = tk.Entry(account_window)
    # Create a label for password
    password_label = tk.Label(account_window, text="Password:")
    # Create an entry box for password
    password_entry = tk.Entry(account_window, show="*")
    # Create a function to submit the account details
    def submit_account():
        # Get the username and password from the entry boxes
        username = username_entry.get()
        password = password_entry.get()
        # Save the user data to the json file
        save_user_data(username, password)
        # Close the account window
        account_window.destroy()
    # Create a button to submit the account details
    submit_button = tk.Button(account_window, text="Submit", command=submit_account)
    # Place the widgets on the window using grid layout
    username_label.grid(row=0, column=0, padx=10, pady=10)
    username_entry.grid(row=0, column=1, padx=10, pady=10)
    password_label.grid(row=1, column=0, padx=10, pady=10)
    password_entry.grid(row=1, column=1, padx=10, pady=10)
    submit_button.grid(row=2, column=1, padx=10, pady=10)

# Create a function to open a new window for logging in
def login():
    # Create a top-level window
    login_window = tk.Toplevel(root)
    # Set the window title
    login_window.title("Login")
    # Set the window size
    login_window.geometry("300x200")
    # Create a label for username
    username_label = tk.Label(login_window, text="Username:")
    # Create an entry box for username
    username_entry = tk.Entry(login_window)
    # Create a label for password
    password_label = tk.Label(login_window, text="Password:")
    # Create an entry box for password
    password_entry = tk.Entry(login_window, show="*")
    # Create a function to submit the login details
    def submit_login():
        # Get the username and password from the entry boxes
        username = username_entry.get()
        password = password_entry.get()
        # Try to open the json file and check the user data
        try:
            with open("Accounts1.json", "r") as file:
                # Load the data
                file_data = json.load(file)
                # Loop through the users list
                for user in file_data["users"]:
                    # If the username and password match, login successfully
                    if user["username"] == username and user["password"] == password:
                        # Close the login window
                        login_window.destroy()
                        # Show a message box
                        tk.messagebox.showinfo("Login", "Login successful!")
                        # Break the loop
                        break
                # If the loop ends without breaking, login failed
                else:
                    # Show a message box
                    tk.messagebox.showerror("Login", "Invalid username or password!")
        # If the file does not exist, show a message box
        except FileNotFoundError:
            tk.messagebox.showerror("Login", "No accounts found!")
    # Create a button to submit the login details
    submit_button = tk.Button(login_window, text="Submit", command=submit_login)
    # Place the widgets on the window using grid layout
    username_label.grid(row=0, column=0, padx=10, pady=10)
    username_entry.grid(row=0, column=1, padx=10, pady=10)
    password_label.grid(row=1, column=0, padx=10, pady=10)
    password_entry.grid(row=1, column=1, padx=10, pady=10)
    submit_button.grid(row=2, column=1, padx=10, pady=10)

# Create a label for welcome message
welcome_label = tk.Label(root, text="Welcome to the Tkinter GUI!")
# Create a button for creating an account
create_account_button = tk.Button(root, text="Create Account", command=create_account)
# Create a button for logging in
login_button = tk.Button(root, text="Login", command=login)
# Place the widgets on the window using pack layout
welcome_label.pack(padx=10, pady=10)
create_account_button.pack(padx=10, pady=10)
login_button.pack(padx=10, pady=10)

# Start the main loop
root.mainloop()