Webserver module for python?

I'm currently coding some minor tools in python for which I'd like to have a more or less minimalistic web interface. Are there any simple and lightweight modules providing a http web server (or even web interfaces)? I don't really want to code this stuff myself, as these tools are just for little computer and file management purposes; the need to write a web server by my own would indeed outweigh the benefits from having a web interface under these circumstances.

Do it with BBCode or don't do it AT ALL