So I'm developing a web application involving "socially" networking elements created by users. But, I'm a novice [when it comes to web programming]. I'm getti

So I'm developing a web application involving "socially" networking elements created by users. But, I'm a novice [when it comes to web programming]. I'm getting to the point where I'd like to choose a language/framework. I'm OK (in fact, I prefer) trying options out and switching flexibly before settling down on a choice, but I thought I might get some feedback from some people who know what they're talking about. Some goals (both long- and short-term) central to my plans that I think might influence my choice include: -Lots of user/database interface and editing via gorgeous graph/node visualization -Easy web site template authoring (read: visual/drag & drop elements, no/minimal coding required of user) -Integration of version control (of web pages) -Fairly sophisticated AI performed on the backend for resource matching and knowledge representation -Enabling for public editing of HTML and site design -Online CAD/drawing tool (probably via ) -Acute, application-level awareness of user profile/information in what/how pages and information is displayed as users browse (read: dynamically generate and display content per user) -Web spidering/pulling and reusing content from the web After shopping around, I've been primarily considering Python (Pylons; Django) and WebObjects/Project Wonder. Thoughts? Recommendations? Are these goals _actually_ constraints on what language/framework I choose? What are the more generic features of the language/framework that I should paying attention to, given my goals?