Run Blender from python script

Question

I am trying to learn how to run blender commands from external python script, I am reading this tutorial from GitHub . However when I run the first test blender -b -P run_script.py I get the following error message:

Read new prefs: /home/sim/.config/blender/2.76/config/userpref.blend

RNA_def_property_ui_text: 'option_extra_vgroups' '' description ends with a '.' ! RNA_def_property_ui_text: 'option_index_type' '' description ends with a '.' !

Traceback (most recent call last):   File "/home/sim/Desktop/WebApp/Blender/blender-scripting-master/run_script.py", line 22, in <module>
    exec(compile(open(file).read(), scriptFile, 'exec'))

  File "fisher_iris_visualization.py", line 3, in <module>
    import numpy as np ImportError: No module named 'numpy'

Then Blender quit

Do you have any idea to solve that? Thank you very much in advance!

Answer 1

It seems like you didn't import numpy module in your script.

It is my guess, without any code, it is not easy for me to debug.

Answer 2

I doesn't look like you have the numpy library installed on your system.

can you verify with;

python -c 'import numpy; numpy.test()'

if it errors out then install numpy with

sudo apt-get install python-numpy

or

pip install --user numpy