Python开发WebService系列教程之REST,web.py,eurasia,Django
在Bioinformatics(生物信息学)领域，WebService是很重要的一种数据交换技术，未来必将更加重要。目前EBI所提供的WebService就分别有SOAP和REST两种方式的服务，不管是数据服务还是计算服务（计算任务提交）。
1 Python + SOAP/WSDL/UDDI
最普遍的做法（个人观点）是使用 python ZSI2.0 ，ZSI还依赖于 SOAPpy 和 pyXML 等LIB。
SOAP协议很多人都很熟悉，有很多现有的应用也都使用Java等语言来开发服务端，而客户端除了java，绝大多数的脚本语言也都可以胜任。
关于python ZSI的使用可以参考IBM DW上的这篇文章： 使用 python 开发 Web Service
2 Python + REST
REST一词目前确实很流行；那么使用Python做REST开发，如何做技术选型呢？？？
其实接触过python web的人应该都知道Django，典型的REST风格的WEB框架 ！！！
那么在实际开发中，我们究竟如何选择？
（1 如果你不是架构师，并不过分追求REST的面向资源的理念和体验REST风格架构的具体实践的话，那么，还是根据自己的业务需求和规模等，选择适合的WEB框架或者python web server就好了；比如常见的Django,web.py,cherrypy,Zope,Twisted,Quixote,spyce,webware for python ... 当然国内的框架也不少。
（2 如果你确实想体验下REST风格架构以及面向资源的设计，也许你可以选择使用web.py来达到目的；
这里有一篇关于使用web.py实现RESTfull开发的博客文章： Getting RESTful with web.py ， 相信有很好的参考价值 。
这里还有一篇中文的博文： 用Python实现CRUD功能REST服务
（3 你可以选择eurasia ！！！ 地址： http://code.google.com/p/eurasia/
eurasia是一个值得你了解的东西，它是一个server，也包含框架；而且主要特点是：
“ Eurasia is a low-level Python Web framework which follows the Tao
Eurasia3 被设计成用于解决百万级同时在线的长连接用户数量的 HTTP 服务器, 或者每秒种处理上万次 CGI 请求的常规 Web 应用服务器。
Eurasia3 向下兼容 AJAX (难道 AJAX 对服务器有要求吗?), 但是她不推荐您使用落后的 AJAX 模式来摧残用户和程序员, 她正在尝试使用诸如 Pushlet (Comet 是 Pushlet 的炒作版本) 一类的有趣技术来改变 Web 的开发面貌。
”
这里的Eurasia3是相对于 Eurasia２说的，两者并不是一会事哦！
这里有它的文档，可以了解和学习下： http://eurasia.googlecode.com/files/Eurasia-3.0.0a6.2-snapshot.tar.bz2
（4 其他方案。
尾声：
在做技术选型时，有两个前提很重要：1 你充分地了解你的项目需求，而且你很清楚自己要把它做成什么样，做到什么规模； 2 你对项目实现相关的技术和理论比较了解，知识面要够广，同时对于主要流派的主要特色要清楚。
之后，你才可能做出不同的方案来比较选择！ 对于IT项目开发，技术主要体现在实现阶段，但是它完全其影响到整个项目生命周期！ 选择合适的理论和方法来解决问题，才有可能提高解决问题的效率和质量。
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