How to set keyframe tangents from Python?

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I'm scripting the creation of keyframes but even if I have two keyframes at say 1.0 that are multiple frames away from each other, the value can be a hair above 1.0 in between the keyframes because of bezier tangents on the keys so I need to make them constant type but the docs don't explain how the hou.constant is invoked from what I can tell.
Edited by dgirard - April 5, 2020 12:00:44
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keyframe.setExpression('constant()')
Tomas Slancik
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Framestore, NY
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thanks.
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