[maya][python] delete unused nodes?

What’s the python equivalent of hypersahde edit>delete unused nodes?

Hi.

This is a UI Command. You can have a look at “hyperShadePanel.mel” to see what going on exactly.
Otherwise you can just wrap the MEL command into Python

mel.eval('hyperShadePanelMenuCommand("hyperShadePanel1", "deleteUnusedNodes");')
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thanks!

// mel
MLdeleteUnused;

python

import maya.mel as mel
mel.eval(‘MLdeleteUnused;’)

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i’ve had to write to my own Delete Unused Nodes because there are some kinds of nodes that can slip through the cracks.

For example, if you end up with a construction history chain that does not feed into a shape node, e.g. polyCube > bevel > polyProjectUV, those “orphaned” construction history nodes will not be removed by Clean Scene, Delete Un-used Nodes, or any of Maya’s other various tools for keeping your files clean.

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This is from years ago, but might you have that Delete Unused Nodes tool you made yourself? Interested ins how it works to know what to delete.