This is not my best work. It's not fast, it's not clean, but it does work. If you'd like to put in some effort cleaning it up, extending it to other parts or sites, drop me a line.
cd to your clone of this repository
Get a virtualenv set up
virtualenv env
Activate it
source env/bin/activate
Then install requirements
pip install -r requirements.txt
If you'd like to run the app more than once, do yourself and run
pip install grequests==0.2.0
This will allow the crawler to make multiple requests at once, which reduces the time it takes to crawl the HK site by a significant margin.
Run crawler.py to get a json string of batteries.
Run sorter.py with the JSON of batteries to get a sorted CSV.
python ./crawler.py > batteries.json
python ./sorter.py < batteries.json