How can I create a keyframe with a script?

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#1

Basically I have a rig and I want to use a script to take the rig and make a Keyframe of its current position, its body part positions, etc. Not sure how to do that

#2

You should look at the Keyframe API, which, in addition to explaining how Keyframes work, provides an example script that generates Keyframes for a rig.