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Zope
Zope is a family of free and open-source web application servers written in Python, and their associated online community. Zope stands for "Z Object Publishing Environment", and was the first system using the now common object publishing methodology for the Web. Zope has been called a Python killer app, an application that helped put Python in the spotlight. Over the last few years, the Zope community has spawned several additional web frameworks with disparate aims and principles, but sharing philosophy, people, and source code. Zope 2 is still the most widespread of these frameworks, largely thanks to the Plone content management system, which runs on Zope 2. BlueBream (earlier called Zope 3) is less widespread but underlies several large sites, including Launchpad. Grok was started as a more programmer-friendly framework, "Zope 3 for cavemen", and in 2009 Pyramid gained popularity in the Zope community as a minimalistic framework based on Zope principles. History The Zope Corpo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zope Object Database
The Zope Object Database (ZODB) is an object-oriented database for transparently and persistently storing Python objects. It is included as part of the Zope web application server, but can also be used independently of Zope. Features of the ZODB include: transactions, history/undo, transparently pluggable storage, built-in caching, multiversion concurrency control (MVCC), and scalability across a network (using ). History * Created by Jim Fulton of Zope Corporation in the late 90s. * Started as simple Persistent Object System (POS) during Principia development (which later became Zope) * ZODB 3 was renamed when a significant architecture change was landed. * ZODB 4 was a short lived project to re-implement the entire ZODB 3 package using 100% Python. Implementation Basics ZODB stores Python objects using an extended version of Python's built-in object persistence (pickle). A ZODB database has a single root object (normally a dictionary), which is the only object directly made a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zope Public License
Zope Public License is a free software license, used primarily for the Zope application server software. The license is similar to the well-known BSD license, however the ZPL also adds clauses prohibiting trademark use and requiring documentation of all changes. External links Zope Public Licensev2.0 at the Open Source InitiativeZope Public Licensev2.1 at the Free Software FoundationZope Public Licensev2.1 at the Zope Foundation Zope is a family of free and open-source web application servers written in Python, and their associated online community. Zope stands for "Z Object Publishing Environment", and was the first system using the now common object publishing method ... References Free and open-source software licenses Zope {{cms-software-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plone (software)
Plone is a free and open source content management system (CMS) built on top of the Zope application server. Plone is positioned as an enterprise CMS and is commonly used for intranets and as part of the web presence of large organizations. High-profile public sector users include the U.S. Federal Bureau of Investigation, Brazilian Government, United Nations, City of Bern (Switzerland), New South Wales Government (Australia), and European Environment Agency. Plone's proponents cite its security track record and its accessibility as reasons to choose Plone. Plone has a long tradition of development happening in so-called "sprints", in-person meetings of developers over the course of several days, the first having been held in 2003 and nine taking place in 2014. The largest sprint of the year is the sprint immediately following the annual conference. Certain other sprints are considered ''strategic'' so are funded directly by the Plone Foundation, although very few attendees are s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Template Attribute Language
The Template Attribute Language (TAL) is a templating language used to generate dynamic HTML and XML pages. Its main goal is to simplify the collaboration between programmers and designers. This is achieved by embedding TAL statements inside valid HTML (or XML) tags which can then be worked on using common design tools. TAL was created for Zope but is used in other Python-based projects as well. Attributes The following attributes are used, normally prefixed by "tal:": ; define : creates local variables, valid in the element bearing the attribute (including contained elements) ; condition : decides whether or not to render the tag (and all contained text) ; repeat : creates a loop variable and repeats the tag iterating a sequence, e.g. for creating a selection list or a table ; content : replaces the content of the tag ; replace : replaces the tag (and therefore is not usable together with content or attributes) ; attributes : replaces the given attributes (e. g. by using tal: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grok (web Framework)
Grok is an open-source web framework based on Zope Toolkit (ZTK) technology. The project was started in 2006 by a number of Zope developers. Its core technologies (Martian, grokcore.component) are also used in other Zope-based projects. The primary motive behind Grok is to make the Zope Toolkit technology more accessible and easier to use for newcomers and, at the same time, speed up application development, in accordance with the agile programming paradigm. To achieve this, Grok uses convention-over-configuration instead of using an explicit XML based configuration language (ZCML) as Zope Toolkit and BlueBream do. Grok uses Python code for component configuration, and has many implicit defaults and conventions. Grok is similar in feel to other Python Web frameworks such as TurboGears, Pylons Pylon may refer to: Structures and boundaries * Pylon (architecture), the gateway to the inner part of an Ancient Egyptian temple or Christian cathedral * Pylon, a support tower structur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ballerus Ballerus
''Ballerus ballerus'', also known as the zope or the blue bream, is a species of cyprinid fish native to Eurasia. Description ''Ballerus ballerus'' is one of the more streamlined breams, with a more laterally compressed body (especially towards the tail) and an upturned mouth. The eye is small It has small scales and the lateral line consists of 67-75 scales. It is a pale silvery colour with either pale yellowish or colourless fins. They are normally 25–35 cm in length but occasionally can be up to 40 cm. The maximum published weight is 940g, although the largest rod caught fish, caught in Slovakia, weighed 2.2 kg and measured 53 cm in length. The males develop nuptial tubercules above the anal fin during the spring spawning season. Distribution ''Ballerus ballerus'' is found in the large lowland rivers draining to the Baltic Sea, although it is not found in northern Sweden and Finland north of 62°N; the Weser and Elbe draining into the North Sea; the Bl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pylons Project
Pylons Project is an open-source organization that develops a set of web application technologies written in Python. Initially the project was a single web framework called Pylons, but after the merger with the repoze.bfg framework under the new name Pyramid, the Pylons Project now consists of multiple related web application technologies. Pyramid Pyramid is an open source web framework written in Python and is based on WSGI. It is a minimalistic web framework inspired by Zope, Pylons and Django. Originally called "repoze.bfg", Pyramid gathered attention mostly in the Zope and Plone community as the Open Society Institute's KARL project migrated from Plone to BFG. In 2010 it was announced that the Pylons framework will move over to using BFG as a base in version 1.5. As a result of the inclusion of BFG into the Pylons project, BFG was renamed Pyramid. Features Pyramid is a minimalistic, platform-independent web framework. It is persistence agnostic and is integrated both with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guido Van Rossum
Guido van Rossum (; born 31 January 1956) is a Dutch programmer best known as the creator of the Python programming language, for which he was the " benevolent dictator for life" (BDFL) until he stepped down from the position on 12 July 2018. He remained a member of the Python Steering Council through 2019, and withdrew from nominations for the 2020 election. Life and education Van Rossum was born and raised in the Netherlands, where he received a master's degree in mathematics and computer science from the University of Amsterdam in 1982. He received a bronze medal in 1974 in the International Mathematical Olympiad. He has a brother, Just van Rossum, who is a type designer and programmer who designed the typeface used in the "Python Powered" logo. Van Rossum lives in Belmont, California, with his wife, Kim Knapp, and their son. According to his home page and Dutch naming conventions, the " ''van''" in his name is capitalized when he is referred to by surname alone, but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rewrite (programming)
A rewrite in computer programming is the act or result of re-implementing a large portion of existing functionality without re-use of its source code. When the rewrite is not using existing code at all, it is common to speak of a rewrite from scratch. Motivations A piece of software is typically rewritten when one or more of the following apply: *its source code is not available or is only available under an incompatible license *its code cannot be adapted to a new target platform *its existing code has become too difficult to handle and extend *the task of debugging it seems too complicated *the programmer finds it difficult to understand its source code *developers learn new techniques or wish to do a big feature overhaul which requires much change *developers learn that new codes written may extend content options that can fix or overwrite previous problems *the programming language of the source code has to be changed Risks Several software engineers, such as Joel Spolsky ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Web Framework
A web framework (WF) or web application framework (WAF) is a software framework that is designed to support the development of web applications including web services, web resources, and web APIs. Web frameworks provide a standard way to build and deploy web applications on the World Wide Web. Web frameworks aim to automate the overhead associated with common activities performed in web development. For example, many web frameworks provide libraries for database access, templating frameworks, and session management, and they often promote code reuse. Although they often target development of dynamic web sites, they are also applicable to static websites. History As the design of the World Wide Web was not inherently dynamic, early hypertext consisted of hand-coded HTML text files that were published on web servers. Any modifications to published pages needed to be performed by the pages' author. In 1993, the Common Gateway Interface (CGI) standard was introduced for interfa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Launchpad (website)
Launchpad is a web application and website that allows users to develop and maintain software, particularly open-source software. It is developed and maintained by Canonical Ltd. On 21 July 2009, the source code was released publicly under the GNU Affero General Public License. , the Launchpad repository hosts more than 40,000 projects. The domain ''launchpad.net'' attracted 1 million visitors by August 2009 according to a Compete.com survey. Components It has several parts: * Answers: a community support site and knowledge base. * Blueprints: a system for tracking new features. * Bugs: a bug tracker that allows bugs to be tracked in multiple contexts (e.g. in an Ubuntu package, as an upstream, or in remote bug trackers). * Code: source code hosting, with support for the Bazaar and Git version control systems. * Translations: a site for localising applications into different languages. A significant but less visible component is Soyuz, "the distribution management portion of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Python (programming Language)
Python is a high-level, general-purpose programming language. Its design philosophy emphasizes code readability with the use of significant indentation. Python is dynamically-typed and garbage-collected. It supports multiple programming paradigms, including structured (particularly procedural), object-oriented and functional programming. It is often described as a "batteries included" language due to its comprehensive standard library. Guido van Rossum began working on Python in the late 1980s as a successor to the ABC programming language and first released it in 1991 as Python 0.9.0. Python 2.0 was released in 2000 and introduced new features such as list comprehensions, cycle-detecting garbage collection, reference counting, and Unicode support. Python 3.0, released in 2008, was a major revision that is not completely backward-compatible with earlier versions. Python 2 was discontinued with version 2.7.18 in 2020. Python consistently ranks as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
