by the rule. It receives a Twisted Failure instance as first parameter. Warning: Because of its internal implementation, you must explicitly set callbacks for new requests when writing CrawlSpider-based originated those results. It must return a list of results (items or requests). Warning: Because of its internal implementation, you must explicitly set callbacks for new requests when writing XMLFeedSpider-based output of those functions can be anything. The result of input processors will be appended to an internal list (in the Loader) containing the collected values (for that field). The result of the output

by the rule. It receives a Twisted Failure instance as first parameter. Warning: Because of its internal implementation, you must explicitly set callbacks for new requests when writing CrawlSpider-based originated those results. It must return a list of results (items or requests). Warning: Because of its internal implementation, you must explicitly set callbacks for new requests when writing XMLFeedSpider-based output of those functions can be anything. The result of input processors will be appended to an internal list (in the Loader) containing the collected values (for that field). The result of the output

output of those functions can be anything. The result of input processors will be appended to an internal list (in the Loader) containing the collected values (for that field). The result of the output given functions, similar to the Compose pro- cessor. The difference with this processor is the way internal results are passed among functions, which is as follows: The input value of this processor is iterated when you run scrapy crawl. However, Scrapy supports running multiple spiders per process using the internal API. Here is an example that runs multiple spiders simultaneously: import scrapy from scrapy.crawler

output of those functions can be anything. The result of input processors will be appended to an internal list (in the Loader) containing the collected values (for that field). The result of the output given functions, similar to the Compose pro- cessor. The difference with this processor is the way internal results are passed among functions, which is as follows: The input value of this processor is iterated when you run scrapy crawl. However, Scrapy supports running multiple spiders per process using the internal API. Here is an example that runs multiple spiders simultaneously: import scrapy from scrapy.crawler

output of those functions can be anything. The result of input processors will be appended to an internal list (in the Loader) containing the collected values (for that field). The result of the output given functions, similar to the Compose pro- cessor. The difference with this processor is the way internal results are passed among functions, which is as follows: 3.5. Item Loaders 63 Scrapy Documentation when you run scrapy crawl. However, Scrapy supports running multiple spiders per process using the internal API. Here is an example that runs multiple spiders simultaneously: import scrapy from scrapy.crawler

output of those functions can be anything. The result of input processors will be appended to an internal list (in the Loader) containing the collected values (for that field). The result of the output given functions, similar to the Compose processor. The difference with this processor is the way internal results are passed among functions, which is as follows: The input value of this processor is iterated when you run scrapy crawl. However, Scrapy supports running multiple spiders per process using the internal API. Here is an example that runs multiple spiders simultaneously: import scrapy from scrapy.crawler

output of those functions can be anything. The result of input processors will be appended to an internal list (in the Loader) containing the collected values (for that field). The result of the output given functions, similar to the Compose pro- cessor. The difference with this processor is the way internal results are passed among functions, which is as follows: The input value of this processor is iterated when you run scrapy crawl. However, Scrapy supports running multiple spiders per process using the internal API. Here is an example that runs multiple spiders simultaneously: import scrapy from scrapy.crawler

by the rule. It receives a Twisted Failure instance as first parameter. Warning: Because of its internal implementation, you must explicitly set callbacks for new requests when writing CrawlSpider-based originated those results. It must return a list of results (items or requests). Warning: Because of its internal implementation, you must explicitly set callbacks for new requests when writing XMLFeedSpider-based output of those functions can be anything. The result of input processors will be appended to an internal list (in the Loader) containing the collected values (for that field). The result of the output

by the rule. It receives a Twisted Failure instance as first parameter. Warning: Because of its internal implementation, you must explicitly set callbacks for new requests when writing CrawlSpider-based originated those results. It must return a list of results (items or requests). Warning: Because of its internal implementation, you must explicitly set callbacks for new requests when writing XMLFeedSpider-based output of those functions can be anything. The result of input processors will be appended to an internal list (in the Loader) containing the 72 Chapter 3. Basic concepts Scrapy Documentation, Release

output of those functions can be anything. The result of input processors will be appended to an internal list (in the Loader) containing the collected values (for that field). The result of the output given functions, similar to the Compose pro- cessor. The difference with this processor is the way internal results are passed among functions, which is as follows: The input value of this processor is iterated when you run scrapy crawl. However, Scrapy supports running multiple spiders per process using the internal API. Here is an example that runs multiple spiders simultaneously: import scrapy from scrapy.crawler