[Autogenerated] all right, we've reached the end of this module.
It's been another interesting set of topics we've explored.
We first started off by seeing how to use allowing deny rules
to modify crawling behavior of spiders.
Then we looked at input and output processors and why they
are useful for modifying on the fly cross scrape data before
saving values to item fields.
Then we looked at how item loaders are convenient for invoking input
and output operations for multiple item fuels.
In one shot,
we also checked how pipelines are useful for carrying out
several operations on items such as adjusting prices or
dropping items that don't have prices.
And finally we went through a demo where all these concepts were
applied to a scrappy spider to retrieve books.
Details from a website.