Even though YASARA has its own built-in macro language, there are some applications where Yanaconda macros cannot help, like web-services and database-interfaces. Python is a well established, user friendly scripting language with excellent support for the above topics and was therefore the first choice. Support for other languages can be added quickly, so if you are not happy with Python, send a mail with the subject "Plugin Language" to eliza@yasara.org.