2. New program suggestion

2.1. Starbuzz has no beans

• The director of Starbuzz wants an option to quickly buy without waiting for the price to drop

• When running the program, it will ask you if you want to buy now or not

• If the user answers yes, it will take the current price and buy it

• If not, it will wait until it drops below 4.74

2.2. New program suggestion

import urllib.request def buy(): pagina = urllib.request.urlopen("https://cors.bridged.cc/http://beans.itcarlow.ie/prices-loyalty.html") texto = pagina.read() donde = texto.find("$") inicio = donde + 1 fin = inicio + 4 precio = float(texto[inicio:fin]) return precio opcion = input("Do you want to buy now? (Y/N)") if opcion.lower() == "y": precio = buy() print("Buy now! Price: %5.2f" % precio) else: precio = 99.99 while precio >= 4.74: precio = buy() print("Buy now! Price: %5.2f" % precio)

2.3. Ugly program…

• Don’t duplicate your code…

• This leads to code bloat, making the maintenance of your code difficult

• Try to reuse your code

• By defining functions we will reuse code

• What’s the difference?

• If I have to change something, I’ll change it in one place.

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