existing meta- data values. 66 Chapter 3. Basic concepts Scrapy Documentation, Release 2.2.1 3.4.3 Supporting All Item Types In code that receives an item, such as methods of item pipelines or spider middlewares spider) This method is called for every item pipeline component. item is an item object, see Supporting All Item Types. process_item() must either: return an item object, return a Deferred or raise 2542). • Faster checks in LinkExtractor for allow/deny patterns (issue 2538). • Remove dead code supporting old Twisted versions (issue 2544). 284 Chapter 7. All the rest Scrapy Documentation, Release

existing meta- data values. 66 Chapter 3. Basic concepts Scrapy Documentation, Release 2.4.1 3.4.3 Supporting All Item Types In code that receives an item, such as methods of item pipelines or spider middlewares spider) This method is called for every item pipeline component. item is an item object, see Supporting All Item Types. process_item() must either: return an item object, return a Deferred or raise 2542). • Faster checks in LinkExtractor for allow/deny patterns (issue 2538). • Remove dead code supporting old Twisted versions (issue 2544). 7.1.23 Scrapy 1.3.0 (2016-12-21) This release comes rather

metadata key for the name field, keeping all the previously existing meta- data values. 3.4.3 Supporting All Item Types In code that receives an item, such as methods of item pipelines or spider middlewares spider) This method is called for every item pipeline component. item is an item object, see Supporting All Item Types. process_item() must either: return an item object, return a Deferred or raise 2542). • Faster checks in LinkExtractor for allow/deny patterns (issue 2538). • Remove dead code supporting old Twisted versions (issue 2544). 7.1.21 Scrapy 1.3.0 (2016-12-21) This release comes rather

serializer metadata key for the name field, keeping all the previously existing metadata values. 3.4.3 Supporting All Item Types In code that receives an item, such as methods of item pipelines or spider middlewares spider) This method is called for every item pipeline component. item is an item object, see Supporting All Item Types. process_item() must either: return an item object, return a Deferred or raise 2542). • Faster checks in LinkExtractor for allow/deny patterns (issue 2538). • Remove dead code supporting old Twisted versions (issue 2544). 7.1.32 Scrapy 1.3.0 (2016-12-21) This release comes rather

serializer metadata key for the name field, keeping all the previously existing metadata values. 3.4.3 Supporting All Item Types In code that receives an item, such as methods of item pipelines or spider middlewares spider) This method is called for every item pipeline component. item is an item object, see Supporting All Item Types. process_item() must either: return an item object, return a Deferred or raise 2542). • Faster checks in LinkExtractor for allow/deny patterns (issue 2538). • Remove dead code supporting old Twisted versions (issue 2544). 7.1.26 Scrapy 1.3.0 (2016-12-21) This release comes rather

serializer metadata key for the name field, keeping all the previously existing metadata values. 3.4.3 Supporting All Item Types In code that receives an item, such as methods of item pipelines or spider middlewares spider) This method is called for every item pipeline component. item is an item object, see Supporting All Item Types. process_item() must either: return an item object, return a Deferred or raise 2542). • Faster checks in LinkExtractor for allow/deny patterns (issue 2538). • Remove dead code supporting old Twisted versions (issue 2544). 7.1.38 Scrapy 1.3.0 (2016-12-21) This release comes rather

serializer metadata key for the name field, keeping all the previously existing metadata values. 3.4.3 Supporting All Item Types In code that receives an item, such as methods of item pipelines or spider middlewares spider) This method is called for every item pipeline component. item is an item object, see Supporting All Item Types. process_item() must either: return an item object, return a Deferred or raise 2542). • Faster checks in LinkExtractor for allow/deny patterns (issue 2538). • Remove dead code supporting old Twisted versions (issue 2544). 7.1.34 Scrapy 1.3.0 (2016-12-21) This release comes rather

serializer metadata key for the name field, keeping all the previously existing metadata values. 3.4.3 Supporting All Item Types In code that receives an item, such as methods of item pipelines or spider middlewares spider) This method is called for every item pipeline component. item is an item object, see Supporting All Item Types. process_item() must either: return an item object, return a Deferred or raise 2542). • Faster checks in LinkExtractor for allow/deny patterns (issue 2538). • Remove dead code supporting old Twisted versions (issue 2544). 7.1.36 Scrapy 1.3.0 (2016-12-21) This release comes rather

serializer metadata key for the name field, keeping all the previously existing metadata values. Supporting All Item Types In code that receives an item, such as methods of item pipelines or spider middlewares spider) This method is called for every item pipeline component. item is an item object, see Supporting All Item Types. process_item() must either: return an item object, return a Deferred [https://twistedmatrix allow/deny patterns (issue 2538 [https://github.com/scrapy/scrapy/issues/2538]). Remove dead code supporting old Twisted versions (issue 2544 [https://github.com/scrapy/scrapy/issues/2544]). Scrapy 1.3.0

serializer metadata key for the name field, keeping all the previously existing metadata values. 3.4.3 Supporting All Item Types In code that receives an item, such as methods of item pipelines or spider middlewares spider) This method is called for every item pipeline component. item is an item object, see Supporting All Item Types. process_item() must either: return an item object, return a Deferred or raise 2542). • Faster checks in LinkExtractor for allow/deny patterns (issue 2538). • Remove dead code supporting old Twisted versions (issue 2544). 7.1.35 Scrapy 1.3.0 (2016-12-21) This release comes rather