Found it, the error was at the line
y=y0+i*0,03
(Accidently a comma slipt in)
Short question to hierarchical Objects - guess (as I tried) this is not possible:
Say I want an object to move with it's shadow.
ball = viz.add('../resources/models/ball.wrl')
shadow = viz.add('../resources/models/shadow.wrl')
shadow.translate(0, 1, 0, viz.RELATIVE)
shadow.alpha(0.7)
shadowBall=ball.add(shadow)
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