import tkinter as tk

def generate_fibonacci():

num = int(fibonacci_entry.get())

fib_list = [0, 1]

for i in range(2, num):

fib_list.append(fib_list[i-1] + fib_list[i-2])

fib_output.config(text=f"Fibonacci Terms: {fib_list}")

def add_element():

element = add_entry.get()

gui_list.append(element)

list_output.config(text=f"List: {gui_list}")

list_count.config(text=f"List Count: {len(gui_list)}")

def delete_element():

element = delete_entry.get()

if element in gui_list:

gui_list.remove(element)

list_output.config(text=f"List: {gui_list}")

list_count.config(text=f"List Count: {len(gui_list)}")

def return_to_menu():

fib_frame.pack_forget()

list_frame.pack_forget()

menu_frame.pack()

window = tk.Tk()

window.title("GUI EL")

gui_list = []

screen_width = window.winfo_screenwidth()

screen_height = window.winfo_screenheight()

win_width = int(screen_width / 2)

win_height = int(screen_height / 2)

win_x = int((screen_width - win_width) / 2)

win_y = int((screen_height - win_height) / 2)

window.geometry(f"{win_width}x{win_height}+{win_x}+{win_y}")

menu_frame = tk.Frame(window)

menu_frame.pack()

fib_button = tk.Button(menu_frame, text="Fibonacci", command=lambda: [menu_frame.pack_forget(), fib_frame.pack()])

fib_button.pack(pady=10)

list_button = tk.Button(menu_frame, text="List Manipulation", command=lambda: [menu_frame.pack_forget(), list_frame.pack()])

list_button.pack(pady=10)

fib_frame = tk.Frame(window)

fib_label = tk.Label(fib_frame, text="Enter the number of terms:")

fib_label.pack(pady=10)

fibonacci_entry = tk.Entry(fib_frame)

fibonacci_entry.pack(pady=5)

generate_button = tk.Button(fib_frame, text="Generate", command=generate_fibonacci)

generate_button.pack(pady=10)

fib_output = tk.Label(fib_frame, text="Fibonacci Terms: ")

fib_output.pack(pady=10)

return_button = tk.Button(fib_frame, text="Return to Menu", command=return_to_menu)

return_button.pack(pady=10)

list_frame = tk.Frame(window)

add_label = tk.Label(list_frame, text="Add Element:")

add_label.pack(pady=10)

add_entry = tk.Entry(list_frame)

add_entry.pack(pady=5)

add_button = tk.Button(list_frame, text="Add", command=add_element)

add_button.pack(pady=5)

delete_label = tk.Label(list_frame, text="Delete Element:")

delete_label.pack(pady=10)

delete_entry = tk.Entry(list_frame)

delete_entry.pack(pady=5)

delete_button = tk.Button(list_frame, text="Delete", command=delete_element)

delete_button.pack(pady=5)

list_output = tk.Label(list_frame, text="My List: ")

list_output.pack(pady=10)

list_count = tk.Label(list_frame, text="List Count: ")

list_count.pack(pady=10)

return_button = tk.Button(list_frame, text="Return to Menu", command=return_to_menu)

return_button.pack(pady=10)

window.mainloop()