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how can i add a driver for a shapekey via python? 

shape_keys.animation_data.driver_button_add(True)

or

obj=bpy.context.active_object
obj.driver_add('key_blocks["Eye_left"].value')

The Problem is that it can't find the shape key and shape keys are getting their driver with a different method; so I'm a bit confused how it can be added by python correctly. Sorry I'm new to Python. Thanks for your help!

tst
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1 Answers1

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import bpy

obj = bpy.context.active_object
driver = obj.data.shape_keys.key_blocks['Key 1'].driver_add("value")
pink vertex
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    Docs say driver_add() returns a FCurve object, so you don't have the driver yet: driver = obj.data.shape_keys.key_blocks['Key 1'].driver_add("value").driver (https://docs.blender.org/api/2.79/bpy.types.bpy_struct.html#bpy.types.bpy_struct.driver_add) – R. Navega Mar 14 '18 at 08:18