Useful Blender BPY Snippet

Use Cycles rendering with all GPU

OPTIX is used.

# Setup CYCLE
 
bpy.data.scenes[0].render.engine = "CYCLES"
 
# Set the device_type
bpy.context.preferences.addons["cycles"].preferences.compute_device_type = "OPTIX" # or "OPENCL"
 
# Set the device and feature set
bpy.context.scene.cycles.device = "GPU"
bpy.context.scene.cycles.feature_set = "SUPPORTED"
 
# get_devices() to let Blender detects GPU device
bpy.context.preferences.addons["cycles"].preferences.get_devices()
print(bpy.context.preferences.addons["cycles"].preferences.compute_device_type)
for d in bpy.context.preferences.addons["cycles"].preferences.devices:
    if 'Intel' in d['name']:
        continue
    if 'CPU' in d['name']:
        continue
    d["use"] = 1 # Using all devices
    print(d["name"], d["use"])

Enable addons with BPY

bpy.ops.preferences.addon_enable(module = 'sun_position')