3 The improvements proposed by Evan Jones, which are detailed in this paper, got merged in Python 2.5, but this only reduces the problem, it doesn’t fix it completely. To quote the paper: Unfortunately response 6.6. Signals 257 Scrapy Documentation, Release 2.5.1 headers_received New in version 2.5. scrapy.signals.headers_received(headers, request, spider) Sent by the HTTP 1.1 and S3 download handlers module • dropped support for Python 2.5. See https://blog.scrapinghub.com/2012/02/27/ scrapy-0-15-dropping-support-for-python-2-5/ • dropped support for Twisted 2.5 • added REFERER_ENABLED setting, to

Scrapy 2.5 documentation Scrapy is a fast high-level web crawling [https://en.wikipedia.org/wiki/Web_crawler] and web scraping [https://en.wikipedia.org/wiki/Web_scraping] framework, used to crawl websites which are detailed in this paper [https://www.evanjones.ca/memoryallocator/], got merged in Python 2.5, but this only reduces the problem, it doesn’t fix it completely. To quote the paper: Unfortunately spider (Spider object) – the spider associated with the response headers_received New in version 2.5. scrapy.signals.headers_received(headers, request, spider) Sent by the HTTP 1.1 and S3 download handlers

modules | next | Celery 2.5.5 documentation » This document describes an older version of Celery (2.5). For the latest stable version please go here. Celery - Distributed Task Queue Contents: Getting Cookbook Contributing Community Resources Tutorials Frequently Asked Questions What’s new in Celery 2.5 Change history API Reference Internals Indices and tables Index Module Index Search Page © Copyright documentation » This document describes an older version of Celery (2.5). For the latest stable version please go here. Getting Started Release: 2.5 Date: February 04, 2014 Introduction Synopsis Overview Example

Contents 1 Celery Documentation, Release 2.5.5 2 Contents CHAPTER 1 Getting Started Release 2.5 Date February 04, 2014 1.1 Introduction Version 2.5.5 Web http://celeryproject.org/ Download http://pypi repository by doing the following: $ git clone git://github.com/celery/celery.git 1.2 Brokers Release 2.5 Date February 04, 2014 Celery supports several message transport alternatives. 6 Chapter 1. Getting directory for the full license text. 16 Chapter 1. Getting Started CHAPTER 2 User Guide Release 2.5 Date February 04, 2014 2.1 Overview • Tasks • Workers • Monitoring • Routing • Ecosystem – Kombu

update({'bath': '2.5 bath', 'sqft': '1100'}) >>> query = House.update(features=new_features) >>> query.where(House.id == h.id).execute() 1 >>> h = House.get(House.id == h.id) >>> h.features {'bath': '2.5 bath', to use this functionality you must be using the correct version of Postgres with psycopg2 version 2.5 or greater. To use BinaryJSONField, which has many performance and querying advantages, you must have override this method to create a customized JSON wrapper. Note You must be using Postgres 9.2 / psycopg2 2.5 or greater. Note If you are using Postgres 9.4, strongly consider using the BinaryJSONField instead

update({'bath': '2.5 bath', 'sqft': '1100'}) >>> query = House.update(features=new_features) >>> query.where(House.id == h.id).execute() 1 >>> h = House.get(House.id == h.id) >>> h.features {'bath': '2.5 bath', to use this functionality you must be using the correct version of Postgres with psycopg2 version 2.5 or greater. To use BinaryJSONField, which has many performance and querying advantages, you must have this method to create a customized JSON wrapper. Note: You must be using Postgres 9.2 / psycopg2 2.5 or greater. Note: If you are using Postgres 9.4, strongly consider using the BinaryJSONField instead

update({'bath': '2.5 bath', 'sqft': '1100'}) >>> query = House.update(features=new_features) >>> query.where(House.id == h.id).execute() 1 >>> h = House.get(House.id == h.id) >>> h.features {'bath': '2.5 bath', to use this functionality you must be using the correct version of Postgres with psycopg2 version 2.5 or greater. To use BinaryJSONField, which has many performance and querying advantages, you must have database it will be returned as a Python data structure. Note You must be using Postgres 9.2 / psycopg2 2.5 or greater. Note If you are using Postgres 9.4, strongly consider using the BinaryJSONField instead

to use this functionality you must be using the correct version of Postgres with psycopg2 version 2.5 or greater. To use BinaryJSONField, which has many performance and querying advantages, you must have update({'bath': '2.5 bath', 'sqft': '1100'}) >>> query = House.update(features=new_features) >>> query.where(House.id == h.id).execute() 1 >>> h = House.get(House.id == h.id) >>> h.features {'bath': '2.5 bath', database it will be returned as a Python data structure. Note You must be using Postgres 9.2 / psycopg2 2.5 or greater. Note If you are using Postgres 9.4, strongly consider using the BinaryJSONField instead

update({'bath': '2.5 bath', 'sqft': '1100'}) >>> query = House.update(features=new_features) >>> query.where(House.id == h.id).execute() 1 >>> h = House.get(House.id == h.id) >>> h.features {'bath': '2.5 bath', to use this functionality you must be using the correct version of Postgres with psycopg2 version 2.5 or greater. To use BinaryJSONField, which has many performance and querying advantages, you must have database it will be returned as a Python data structure. Note You must be using Postgres 9.2 / psycopg2 2.5 or greater. Note If you are using Postgres 9.4, strongly consider using the BinaryJSONField instead

update({'bath': '2.5 bath', 'sqft': '1100'}) >>> query = House.update(features=new_features) >>> query.where(House.id == h.id).execute() 1 >>> h = House.get(House.id == h.id) >>> h.features {'bath': '2.5 bath', to use this functionality you must be using the correct version of Postgres with psycopg2 version 2.5 or greater. To use BinaryJSONField, which has many performance and querying advantages, you must have database it will be returned as a Python data structure. Note You must be using Postgres 9.2 / psycopg2 2.5 or greater. Note If you are using Postgres 9.4, strongly consider using the BinaryJSONField instead