Scrapy tips

Passing variables between functions using meta and cb_kwargs

This will cover how to use callback with “meta” and the newer “cb_kwargs”

The highlighted sections show how “logo_url” goes from parse to fetch_detail, where “yield” then sends it to the FEED export (output CSV file).

When using ‘meta’ you need to use ‘meta.get’ on the ‘response’ in the next function.

The newer, Scrapy recommended way is to use “cb_kwargs”

As you can see, there is no need to use any sort of “get” method in ‘fetch-detail’ so it’s simpler to use now, albeit with a slightly longer, less memorable name!