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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def unit_poly_verts(theta):
 """Return vertices of polygon for subplot axes. This polygon is circumscribed by a unit circle centered at (0.5, 0.5) """

    x0, y0, r = [0.5] * 3
    verts = [(r*np.cos(t) + x0, r*np.sin(t) + y0) for t in theta]
    return verts