Plot an ellipse with python 2.7 knowing the equation Ax^2 + Bxy + Cy^2 + Dx +Ey = 1 : I have this equation, which define an ellipse. 

    7.91x^2 + -0.213xy + 5.46y^2 -0.031x -0.0896y = 1
Of the general form: `Ax^2 + Bxy + Cy^2 + Dx +Ey = 1`

Can you give a script to simply plot it ? 

I am using python 2.7 -- pythonxy

Thanks !