This Extension allows you to embed a python script in the svg document, in that script you can define vars and functions (any python code really)... Then you can create parametric attributes in your svg objects. a parametric attribute is an attribute prefixed with parametric namespace, this attribute can contain any valid python expression which will be evaluated by this extension and the result will be set to the real attribute (without namespace) for example: # Import utilities from pyscript import svg import math # Simple rotation # 1. Get the Element element = ink.select_first('#arrow') # 2. Parse the element path = svg.PathObject( node = element ) # 3. Rotate path path.rotate( math.radians ( 30 ) ) # take into account inkscape inverted coordinate system # 4. Update element path.commit() Project page: https://gitlab.com/mnesarco/inkscape-pyscript