Checks Amazon to see if the price of a product has changed, if it's gone lower it'll email you, if not it won't do anything.

gistfile1.txt

import bs4
import requests

def main():
	file = open("amazon.txt", 'r')
	for i in file:
		print(i)
		amazon_product = i
		amazon_product = amazon_product.split(" ")
		print(amazon_product)
		amazon_price = amazon_product[0]
		print(amazon_price)

		amazon_new = GetAmazonPrice(amazon_product[1])
		if amazon_price > amazon_new:
			amazon_product[0] = amazon_price
			print("The price is cheaper!")
			lines = file.readlines()
			lines[i] = amazon_new
			file.close()
			file.open("amazon.txt", 'w')
			file.write(lines)
			file.close()


		else:
			print("Price has not changed")

			# send email



def GetAmazonPrice(productURL):
	res = requests.get((productURL))
	res.raise_for_status()
	soup = bs4.BeautifulSoup(res.text, 'html.parser')

	elems = (soup.select(""".a-text-normal"""))
	price = (elems[0].text.strip())
	return price

if __name__ == '__main__':
	main()