Tutorial

112
'''
Use Tkinter's Button method to define a button. The button is on the root window. The name of the button is 'ON'. The
text color of the button is # E1F5FE. The background color of the button is # 0277BD. )function
'''
btn_on = tk.Button(root, width=8, text='ON', fg='#E1F5FE', bg='#0277BD', command=lights_on)
'''
Choose a location to place this button
'''
btn_on.place(x=15, y=15)
'''
The same method defines another key, the difference is that the text above the key is changed to 'OFF'. When the key is
pressed, the lights_off () function is called
'''
btn_off = tk.Button(root, width=8, text='OFF', fg='#E1F5FE', bg='#0277BD', command=lights_off)
btn_off.place(x=95, y=15)
'''
Finally open the message loop
'''
root.mainloop()
●We first run the program in the Raspberry Pi, and then open the program on the PC (first run the server
and then the client).
● Click 'ON', the light is on, and 'on' is printed in the terminal of the Raspberry Pi, indicating that the
program runs successfully.