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buy it now

Using the new get_price() function, you were asked to write a
new version of the price-checking program that does this:

1. Ask the user to indicate if the price is required immediately (Y/N).
2. If the user chooses “Y” for “yes,” find the current price and display it
Your code may look a little on the screen.
different from this, but that's 3. Otherwise, check the price every 15 minutes until it falls below
OK. As long as it does the same $4.74, then (and only then), display the price on screen.
thing, you're doing fine.
import urllib.request

import time

def get_price():

page = urllib.request.urlopen(“http://www.beans-r-us.biz/prices.html")

text = page.read().decode(“utf8")

where = text.find(‘>$')

start_of_price = where + 2
end_of_price = start_of_price + 4

return float(text[start_of_price:end_of_price])
You need to ask the user
if the price is required price_now = input(“Do you want to see the price now (Y/N)? ")
immediately.
if price_now == “Y":

If the user chooses “Y", display print(get_price())
the value that the get_price() else:
function gives you.
price = 99.99

while price > 4.74:
If the user decides to wait for
the price to drop, get the price time.sleep(900)
using the get_price() function,
then use the given value to price = get_price()
decide whether or not it's time
to buy coffee. print(“Buy!")

90 Chapter 3