A weird virtual OS written in Python
from tkinter import *
def shut():
os.destroy()
def light():
global themeblack
os.configure(bg="#F0F8FF")
text.configure(bg="aqua", fg="black")
shutdown.configure(bg="aqua", fg="black")
theme.pack_forget()
themeblack = Button(os, text = "Theme", font=("classic console neue", 50), width=10,bg="aqua", fg="black", border=0, command=dark)
themeblack.pack(pady=5)
def dark():
os.configure(bg="black")
text.configure(bg="black", fg="aqua")
shutdown.configure(bg="black", fg="aqua")
themeblack.pack_forget()
theme = Button(os, text = "Theme", font=("classic console neue", 50), width=10,bg="#101010", fg="aqua", border=0, command=dark)
theme.pack(pady=5)
os = Tk()
os.state("zoomed")
os.wm_attributes("-toolwindow", True)
os.configure(bg="black")
text = Label(os, text="HiOS", font=("classic console neue", 150), bg="black", fg="aqua")
text.pack(pady=70)
shutdown = Button(os, text = "Shutdown", font=("classic console neue", 50), width=10,bg="#101010", fg="aqua", border=0, command=shut)
shutdown.pack(pady=5)
theme = Button(os, text = "Theme", font=("classic console neue", 50), width=10,bg="#101010", fg="aqua", border=0, command=light)
theme.pack(pady=5)
os.mainloop()```