Tukukkk

I want to limit the number of items I find in each pages.

I found this documentation that seems to fit what I need:

class scrapy.contracts.default.ReturnsContract



This contract (@returns) sets lower and upper bounds for the items and 

requests returned by the spider. The upper bound is optional:



@returns item(s)|request(s) [min [max]]

But I don't understand how to use this class. In my spider, I tried to add

ReturnsContract.__setattr__("max",10)

But it didn't work. Am I missing something?

The Spider Contracts are meant for testing purposes, not to control your data extraction logic.

Testing spiders can get particularly annoying and while nothing
prevents you from writing unit tests the task gets cumbersome quickly.
Scrapy offers an integrated way of testing your spiders by the means
of contracts.

This allows you to test each callback of your spider by hardcoding a
sample url and check various constraints for how the callback
processes the response. Each contract is prefixed with an @ and
included in the docstring.

For your purpose, you can simply set an upper bound in your extraction logic, for example:

response.xpath('//my/xpath').extract()[:10]