You have to install Genshi and Jinja separately if you want to use them whereas Mako is included in the default Pylons installation because it is the recommended template language to use .
如果你要使用它们的话，你必须单独安装Genshi和Jinja，而Mako包括在Pylons的默认安装，因为它是推荐使用的模板语言。
Genshi