Questions tagged [python]
Python is an interactive, object-oriented programming language. In Blender, it is used as a general-purpose scripting language and to create add-ons to extend Blender's functionality.
13,608 questions
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How to automatically refresh or reload Import CSV node data?
I am experimenting with the Import CSV node in Blender. I have Blender open alongside a text editor where I edit my CSV file, and I would like an easy way for the new data to update automatically in ...
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How to get bounds scale of selected vertices
I'm coming from a Maya MEL background so total newb to Blender & python, so thanks in advance for any advice to point me in the right direction.
I've been giving this a google for a good couple of ...
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Stopping a property Panel from appearing on objects of other data types
I'm making an addon for Blender and I want to create a new Panel in the mesh properties.
I managed to do it, but it appears on every object type: Cameras, lights, empties, etc.
This is because the <...
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How to determine using Python whether the mouse pointer is hovering over the viewport navigation gizmos?
In top-right part of 3D Viewport, the Navigation Gizmo has multiple components:
Axis gizmo
View gizmos
I have a custom operator which meant to be executed only when mouse pointer is above VIEW_3D <...
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Determine the name of the shader property under the mouse pointer
In Blender, in the Material tab, there are different properties such as Base Color (1), Metallic (2), etc.
I need to find a way to determine which property the mouse pointer is currently hovering over....
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Video fps incorrect in Blender API new_movie() strip
I have an MP4 file that I want to add as a new video strip to the Video Sequencer Editor using an addon or a script. The following Blender API code adds the video, but the playback speed becomes ...
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Add new Array modifier via python without bpy.ops ( in Blender 5.0 ) [closed]
In blender 5.0 beta there is the new array modifier.
( in the background it is actually a "geometry node group" )
The modifier can be added and updated via python with:
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Detect that operator is called above a certain color swatch
In Texture Paint mode there are two color swatches in the top left corner:
If press E above a color swatch – color picker will appear: it's ...
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How exactly do ActionSlots work?
I'm trying to work with action slots through python scripts and I need to understand how they work, really.
The docs say action slots allow an action to animate multiple objects--so far so good. I can ...
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Building Collapsible UI Panels Procedurally
Using Blender 4.5.3, I am trying to automatically generate a list of shapekeys for each mesh object that is a child of the armature that the UI script is running on. The count and the names of the ...
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Creating a new image texture using python scripting
How to create a new image texture using python scripting ?
I tried this :
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How do you create Annotation strokes and points via Python API of blender 4.5.3 LTS?
When I create strokes with the Annotation Tool, I can access and move individual points of a stroke like this
...
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Why does vector data change every time you re-enter edit mode?
I've stored a vertex's coordinate in a variable but when I re-enter edit mode - values are different! Why?
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How can I make a tapered cylinder given 2 points and 2 radii?
If I have two lists, each containing an x, y, z, and a radius at that point, how can I make a tapered cylinder connecting the two points, with the radius of the cylinder equal to the specified radius ...
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Cycles fails with “Resource temporarily unavailable” when running many Blender processes via Ray on 4× A100 GPUs
I’m launching multiple Blender renders through Ray on a private machine with four A100 GPUs, using fractional allocation (@ray.remote(num_gpus=0.25)) so up to 16 render processes start concurrently. ...
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How to find all mesh lights in Blender
I know it's super easy to select all the lights in a scene. But what if I want to select all the mesh lights in a scene?
For example, here I have the Blenderman:
I've turned off all objects of type '...
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Baking operation through script repeatedly updates image of same mesh | Optimization
I am running baking operation for blender through python script but its taking a lot of time due to update image operations running for same mesh. (total time 23 mins)
I need to optimize the process ...
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Generating a triangle with a perfectly rounded tip
I'm aware this question may not belong in this forum, but I'll try to ask anyway.
Given a triangle formed by 3 vertices (v1, v2 and v3), I want to generate a perfectly rounded tip on it in the form ...
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Add keyframe to an Action via script?
I'm trying to import models from a video game into Blender. The tools I have to dump the models gives me a rigged-but-unanimated FBX as the main model, and a second file in a custom format that ...
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Problem copying frames via code
I'm trying to copy N times a grease pencil frame and then iterate over their .drawing.strokes for doing some other things.
My problem:
Right after copying them, ...
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Call pack islands operator with a low level override showing popup for tweaking
I'd like to pack island by calling the operator from code with a low level override. Here it is:
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How to prevent newly created objects from being added to a specific collection in Blender even if that collection is selected?
I’m working with Blender and have a particular workflow where I want to make sure that newly created objects are NOT automatically added to a certain target collection, even when that collection is ...
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How to Stick a Light to the Top-Center of the Viewport in Screen Space (Like UI Overlay)?
I'm working on a Blender Python add-on/script, and I need to position a light source so that it stays fixed at the top-center of the 3D Viewport, similar to how UI elements behave in screen space.
🎯 ...
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Auto Random Seed Generation/Increment in Geometry nodes
I have a geometry node group that takes a "seed" input, which will be used for "Seed" input of different "Random Value Node" nodes inside this node group. However, I want ...
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