How to create a polygon feature using Python?

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I'm making a plugin for Quantum GIS in python. I have a polygon layer and want to create a new feature.

So far, I have this because I need a polygon geometry to add the feature:

surface = QgsGeometry.fromPolygon (polygon)The problem is that I do not create a polygon. I have a list of points where I want to place the polygon.

Can anyone help?



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