Questions tagged [python]
Python is an 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.
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where can I find _bpy module?
In bpy module, there is code like this:
When import bpy, it will prompts error.
import bpy
Traceback (most recent call last):
File "", line 1, in
File "/usr/share/blender/scripts/...
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No module named 'ezdxf'
I'm writing an add-on in vscode to export some geometries as dxf files. When I try to import ezdxf, i get an ModuleNotFoundError: No module named 'ezdxf'.
I have ezdxf installed on my computer and can ...
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Runtime error when rendering animation with a frame_change_pre hanlder defined
To visualize time dependent data I make use of handlers. The idea is to change the geometry every time I change the time. A minimal working example is shown here:
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Relative Quaternion rotations in Blender Python
I'm trying to calculate the relative/local rotation between two Quaternions q1 and q2. The Quaternion represent a rotation in ...
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9
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I want to create a custom asset library with different .blend objects and save it as a combined asset to use in a differrnt scene [closed]
I want to create a custom asset library with different .blend objects and save it as a combined asset to use in a different scene
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Different rotation directions caused by view orientation
I use pyhton "bpy.ops.transform.rotate()" to rotate the right angled pipe I made
Set my transform orientation to Normal and Axis to Z.
When I change my perspective from small to large, I ...
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Is it safe to use a Blender Object as a Python dict key in a background bpy script?
From the Blender Gotchas page I know that Object references are invalidated on Undo/Redo, but what about background script execution where no Undo is performed? Can I safely use a ...
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21
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How to lock the always on top subinterface when run a operator
Open a always on top subinterface
Run a operator modal
...
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module has no attribute 'register' - Installing Blender 4.2 add-on [closed]
Good day, all!
So I finally made my add-on work as it should, but not Blender decided to change how add-ons works) This is great, but now my add-on not installing.
I've removed bl_info from script and ...
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25
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Add text information directly to the viewport for 5 sec
I am trying to add text information directly to the viewport so that it would be displayed for 5 seconds after the button is pressed and then disappear. I have not been able to realize this using ...
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Check if any popup is running in 3D viewport
How to check if any popup is running in 3D viewport like adjust last operation menu, not include N-Panel
I am looking for a method to check this to resolve my addon bugs in blender 4.2.
Script for ...
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how can i import bmesh module just like bpy?
I try to install bpy to my local python package.It work well,but I just want to import bmesh is not found.What can I solve it?
I git clone blender git,and run "make bpy" to import bpy.
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Blender scripting, run the operator after the save window is closed?
have a problem with my addon.
I have a button that is intended to first save a copy of the file (a basic save copy window shows up) and then it runs some operations on the file's model etc. So ...
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How to handle invalid context in Blender 4.0 after render [duplicate]
In my Python script, I rotate a randomized dice with a rigid body, play the animation using bpy.ops.screen.animation_play() to apply the physics, and then render ...
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AttributeError: 'NoneType' object has no attribute 'type' [closed]
Good time of the day, all.
Can't get rid of this error message. Although the function is working, but I get "AttributeError: 'NoneType' object has no attribute 'type'" error message.
Code:
<...
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How to get not active object?
What I'm trying to do is select two objects, add Data Transfer modifier to active object in selection and then use not active as source.
So, active object is ...
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Making a basic n panel template with working properties [duplicate]
I'm trying to display some different property types on a n-panel. I would like to level up from using operator buttons, but I'm having trouble figuring out how to make a panel with some properties.
<...
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Georeference 3D data generated using BlenderGIS
I generated a 3D model (terrain + extruded buildings) using BlenderGIS,and I was wondering if I could integrate them into an ifc project having the right georeferencing using BlenderBIM. The problem ...
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Binding of machine gun ammunition chain
I made the skeleton of a machine gun, and because I want to achieve the effect of the remaining bullets disappearing bit by bit after finishing the bullet in UE, the parent-child relationship of my ...
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How can I transfer settings from Blender 4.1 to 4.2? [duplicate]
I recently installed Blender 4.2, but it’s starting with the default factory settings—meaning all my key mappings, shortcuts, and startup preferences are gone. It seems like Blender 4.2 starts from ...
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Regarding the issue of Blender importing FBX large files being too slow and often unresponsive
May I ask everyone, it always takes a long time for me to import FBX model files that exceed 150M or 200M in Blender, and I often encounter unresponsive situations? How can I solve this problem? First,...
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How can I rig human-looking face onto a 3d FLAME mesh talking head?
Noob question here as I've just started working with Blender and 3d models:
I'm currently working with Blender 3.4.1 and I'm using Python script which runs blender on ...
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Copy/Paste and Duplication Differ with Cloth Simulation
I have a baked cloth simulation that looks as follows:
I need to create meshes for each part of the shirt, so I copied and pasted the shirt repeatedly and created a mask for each part of the shirt ...
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218
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How can I run a function when opening Blender that requires context?
My initial attempt was to call that function directly from the register part. However, I soon realized that this isn't possible for a function that needs context.
I also tried using a load_post ...
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How can I run code whenever any object is added? [duplicate]
When I add an object, I want to run some initialisation code on it first.
How can I do that?
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How to access data (point_data, cell_data) written by meshio in Blender shader editor? [closed]
Conext:
I have a mesh (N points, M cells) in my Python script (outside Blender).
I associate to each point and to each cell a ...
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13
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Index Error Concerning Bound Box When Exporting GM [closed]
As the title says, I'm getting an index (or location unknown) error when exporting a GM. I'm not very experienced with Blender, but it seems Python cannot locate the bound box and I'm uncertain how to ...
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20
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Subtracting overlapping 2D mesh with Python using Blender API
Supposing I have two 2D mesh objects, A and B.
I would like to programmatically subtract the overlapping portion of one from ...
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How do I close an area using Python in Blender 4.1? [duplicate]
I want to close a panel from within my Python addon. Existing questions and answers seem to yield results that no longer work as they are very dated. The suggested code to run is:
...
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How can I add a library override to a non-API custom property from a linked file with Python?
The question regards setting custom properties of a linked file via Python.
Because when setting the property like
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Save an image of an area by it's index [duplicate]
General Question: Is there a way to capture a raw image, so no overlay or gizmo, of an area within Blender only by its index?
I would need a script that writes the pixels of the area to an image ...
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77
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How to recalculate pose bone rotations when armature bone rotation is changed?
I'm trying to import bones and animation data in to blender. The quaternions I have for each keyframe are correct if the armature's bones do not have any rotation. However I also need to import the ...
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Is there a way to restart a modified addon without restarting blender? [closed]
This was answered 10 Years ago. Unfortunately, it doesnt work anymore.
It should be a simple console command:
bpy.ops.script.reload()
However, it only reloads the <...
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Addon works from Text Editor, but fails to enable from Add-ons preferences [duplicate]
I've written very simple addon that exports triangulated and quad mesh of selected object, deleting all material slots and applying transformation. And all work fine if I run it from the Text Editor, ...
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38
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How to create unsigned Int property?
I need a property that can accept the 2267538950 number, unfortunately by default Blender uses a signed int range. There was a way to set subtype="UNSIGNED" in the previous versions but it ...
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29
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Copy framebuffer of 3D View into image
General Question: How can I copy the frame buffer of the currently active viewport to an image within Blender?
The following link already addressed the question, however it utilizes a modal operator ...
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58
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How can I instantiate a Simulation Zone input / output node's socket via python?
I couldn't find an interface like the node tree interface where I can add sockets using interface.new_socket(). In the documentation, the only method I found for ...
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31
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direction perpendicular to screen
I want to create a script that squeezes a curve along the vertical direction of the screen. Currently, I am using
`def get_view_direction():
...
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Python: Randomly selecting 1 object in a set
I have a set up like this:
Where there are 3 or sometimes more grids of different objects one behind the other. The objects are regularly spaced around 20 units in each axis, tho their origins are ...
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bpy.app.timers.register is lagging Blender
In my blender python script I have a function which reads data from a serial port then moves the position of an object based on that data.
I use ...
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Correct way of using bpy.ops.import_mesh.stl bpy function?
First time here! So, I'm trying to create a python script that uses bpy (This script is not being used from within blender, but rather bpy is being called from python as a module), and in this script ...
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How can I turn an Object LineArt into a Poly Curve?
I am really new to bpy and I wrote this script:
...
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KeyError: 'bpy_prop_collection[key]: key "View Layer" not found' when launching blender with external script
When I execute the following code within Blender, it works well regardless of whether it's version 3.x or 4.x. However, if I try to use it by launching Blender with a specific argument to open a ...
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problem with UvRizom
I downloaded the trial version of UvRizom 2024, And I bought the Rizomuv Bridge addon - Blender 2.8+
(https://blendermarket.com/products/rizomuv-bridge)
In "RizomPath" I chose this path:
...
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is it correct to set the camera intrinsics in this way?
I have a 3x3 matrix inside a calibration file that has the intrinsics of my real room inside it. We will call them fx fy cx cy. I would like to know if the code I have written is correct, as I am not ...
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Operator called by another operator does not trigger Adjust Last Operation panel
I have an Operator defined as ImportImageOperator which calls another operator ...
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Script for importing an OBJ file as Shape key for blender 4.1
I have blender version 4.1
I’m trying to adapt the script for my version
...
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24
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How to get the path to an image that the user chooses
I'm using openCV to process an image that is chosen by the user. For OpenCV I just need to get the path to the image, but I'm unable to find anything in the API which lets me just pick a file path (...
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Running modal seems to freeze if the mouse is not moving
I've written an addon for baking an animated material to a texture sequence. It works by creating a new image texture to bake to, baking to that image, saving the image to disk, and then moving on to ...
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Control Blending Mode of the Color Mix node through the custom driver
Could somebody point me out on how to control the Blending mode of Color Mix nodes through the Custom Properties driver? I want to be able to choose between Mix, Multiply and Add parameters.
I have ...
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