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# Write a function with a default argument, and add a comment explaining why mutable default arguments (like a list) are risky in Python.

{ creaseAngle 0.50 coordIndex [0,1,2,-1,0,2,3,-1,0,3,4,-1,5,0,4,-1,6,7,5,-1,8,7,6,-1,9,0,5,-1,9,5,7,-1,0,10,1,-1] coord Coordinate { point [0.217 0.110 0.177,0.219 0. ...

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