Hello.

I have what i would believe is a simple question.

how do I set a keyframe on a parameter?
I've tried a lot of variations on the code below:

Tried using hou.Keyframe and without it.

Looked through the docs, looked through the cookbooks with no luck.
I really have a hard time figuring out how it is so difficult.
I've made python scripts in maya for many years and are confused that I'm stuck with this one.
Thanks!

you can see how keyframes are set in python by using asCode() on a node that has keys

put down a null
add a key on ty at 0, add a key on frame 24, set the value to 5

in the Python Shell
parm = ou.parm('/obj/null1/ty')

print parm.asCode()

you'll see the code

How to set keyframe by python


This is the minimum requirement for keyframes, a lot more options are available to deal with slope, accel, etc… :
https://www.sidefx.com/docs/houdini/hom/hou/Keyframe.html [www.sidefx.com]

myParm.setKeyframe(setKey)

should be

myParm.setKeyframe(myKey)

gladstein
myParm.setKeyframe(setKey)

should be

myParm.setKeyframe(myKey)

Can you guide on how to set multiple keyframes (the above example sets a single keyframe)

My question is related to this thread.

How do I set multiple keyframe?
I tried this approach but it returned an error.

>>> zBox = box.parm('tz')
>>> zBox.keyframes()
()
>>> keys = zbox.keyframes()
Traceback (most recent call last):
File "<console>", line 1, in <module>
NameError: name 'zbox' is not defined
>>> keys = zBox.keyframes()
>>> for key in keys:
... key.setFrame(key.frame()+1)
... key.setValue(key.frame()+2)
... zBox.setKeyframes(keys)
File "<console>", line 4
zBox.setKeyframes(keys)
^
SyntaxError: invalid syntax
>>>