a = mdb.models['Model-1'].rootAssembly
a.rotate(instanceList=('part-1', ), axisPoint=(0.0, 0.0, 0.0),
axisDirection=(1.0, 0.0, 0.0), angle=90.0)
#: The instance part-1 was rotated by 90. degrees about the axis defined by the point 0., 0., 0. and the vector 1., 0., 0.