How to convert this program to a singleton design pattern

I need help in converting this program into a singleton design pattern. I have read this article on stack overflow - Link.

I have been trying to figure out how to do this for some days now.

I understood that singleton design pattern is a way to provide one and only one object of a particular type. It involves only one class to create methods and specify the objects. Also i have written some programs but still i am clueless how to go about doing this.

Actually i am learning object oriented concepts.

import requests

URL = "http://labs.bible.org/api/?passage="


print("To terminate program type 'exit'")
while True:

    cmd = input("Type 'verse' for a random Bible verse: ")

    if cmd.lower()=="verse":
       #to fetch the result from the API
       #requests.get needs a url
        response = requests.get(URL+"random")
        proper_text =":".join(response.text[3:].split(''))
        print(proper_text)
    elif cmd.lower()=="exit":
        print("Program terminated")
        break
    else:
        print("Waiting for valid command")