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Amazon product price tracker using Python

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  • Difficulty Level : Easy
  • Last Updated : 23 Jan, 2019
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As we know Python is a multi-purpose language and widely used for scripting. We can write Python scripts to automate daily life task.

Let’s say we want to track any Amazon product price and grab the deal when the price changes below our defined price. Let’s write a Python script for this.

Below is the code:




# Amazon product price tracker using Python
  
# importing libraries
import bs4 as bs
import sys
import schedule
import time
import urllib.request
from PyQt5.QtWebEngineWidgets import QWebEnginePage
from PyQt5.QtWidgets import QApplication
from PyQt5.QtCore import QUrl
  
import winsound
frequency = 2500  # Set Frequency To 2500 Hertz
duration = 1000  # Set Duration To 1000 ms == 1 second
  
  
class Page(QWebEnginePage):
  
    def __init__(self, url):
        self.app = QApplication(sys.argv)
        QWebEnginePage.__init__(self)
        self.html = ''
        self.loadFinished.connect(self._on_load_finished)
        self.load(QUrl(url))
        self.app.exec_()
  
    def _on_load_finished(self):
        self.html = self.toHtml(self.Callable)
        print('Load finished')
  
    def Callable(self, html_str):
        self.html = html_str
        self.app.quit()
  
def exact_url(url):
    index = url.find("B0")
    index = index + 10
    current_url = ""
    current_url = url[:index]
    return current_url
      
  
def mainprogram():
    exacturl = exact_url(url) # main url to extract data
    page = Page(exacturl)
    soup = bs.BeautifulSoup(page.html, 'html.parser')
    js_test = soup.find('span', id ='priceblock_ourprice')
    if js_test is None:
        js_test = soup.find('span', id ='priceblock_dealprice')        
    str = ""
    for line in js_test.stripped_strings :
        str = line
  
    # convert to integer
    str = str.replace(", ", "")
    current_price = int(float(str))
    your_price = 600
    if current_price < your_price :
        print("Price decreased book now")
        winsound.Beep(frequency, duration)
    else:
        print("Price is high please wait for the best deal")
      
def job():
    print("Tracking....")    
    mainprogram()
  
# main code
schedule.every(1).minutes.do(job)
  
while True:
    schedule.run_pending()
    time.sleep(1)

Output:

Tracking....
Load finished
Price is high please wait for the best deal

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