Python display 3D points

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Hello,

I know that this question is not very related to ROS but I think that there is some of you who may have worked on something like that.

I have to create a python tool that will read data from a topic (sensor_msgs::Laserscan) and then I had to do some operations on it. I have no problem subscribing to the topic but when I am trying to display points with matplotlib python lib, I have an error because I can't run it in the main loop.

So is there someone who know how to use matplotlib with a ros python script or someone who know other python tool to do that ?

(the other solution is to make a publisher that will send the processed scan to rviz)