Change material bump strength in Python

Hi,

I need to change material bump map strength in couple of dozens 3dm scenes and I thought it should be possible to have a Python script which would loop thru all materials in scene and if such material has a bump channel, change it % strength … I tried to goggle some info but found just how to create new mat.

Any idea how to access bump map strength param in Python?

Thanks for help!

Stan

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