Price_Alert

This script gets the price of a product from Amazon.com and sends out SMS notification if it finds a good deal.

How does this work?

• It uses Amazon Product Advertising API to get the product's price.
• If the current price is lower that last purchase's price or yesterday's price, through Twilio, it sends out a text message to the indicated phone numbers.
• It is scheduled to run on every morning by a Cron job.

Setup

1. Install all the dependencies for the Amazon API wraper.

2. Install Twilio module: pip install twilio

3. Create a new config.py file in same directory:

# config.py
# Amazon credentials:
amazon_key = 'YOUR_AMAZON_KEY'
amazon_secret = 'YOUR_AMAZON_SECRET_KEY'
amazon_tag = 'YOUR_AMAZON_ASSOC_TAG'

# Twilio credentials:
twilio_sid = 'YOUR_TWILIO_SID'
twilio_token = 'YOUR_TWILIO_TOKEN'

# Phone numbers:
from_number = '+1 YOUR_TWILIO_PHONE_NUM'
to_number = '+1 YOUR_PHONE_NUM'

4. Create a new value.py file in the same directory:

# value.py
# Enter your product name here:
name = 'rapsberry pi'

# Enter the price for this product from your last purchase:
price = '34.99'

5. Execute the script: python3 main.py.

To set up the cron job:

1. Type in which python3 to get the directory of python3.

2. crontab -e

3. This cron job executes the script everyday at 7:30 AM and print the result to a log file:

30 7 * * * cd /YOUR_PATH ; /PYTHON3_PATH  main.py > /YOUR_PATH/repport.log 2>&1

Sample output:

Best match: Optimum Nutrition Serious Mass, Chocolate, 12 Pound
The current price on Amazon: $47.99 is lower than your last purchase!

Best match: Optimum Nutrition Serious Mass, Chocolate, 12 Pound
The current price on Amazon: $47.99 is lower than yesterday price $51.99