Create flowcharts from Python

[Nagy László Zsolt]

Is there a library for Python that can easily create flowcharts using a 
simple API? I have a set of business rules that can be represented by a 
flowchart. These rules are stored in a database, and I need to display 
them for the end user. It is not a fixed set of rules, the users are 
going to change them frequently. I already have a rather difficult GUI 
where nodes and links are listed and they can be configured. But the 
users want to see this as a  visual flowchart too. It would be the best 
to have it automatically arranged; or at least open it an editor so they 
can move the nodes and see how they are connected.

Is there such thing for Python?

Thanks,

    Laszlo