How to plot 2 variables on a plane

Question

Let\'s say I have an equation:

x**2 + y**2 - 4 = 0

How can I see the circle using sympy, matplotplib or another python solution?

Answer 1

Yes KillianDS, I now understand this is a duplicate of Is it possible to plot implicit equations using Matplotlib?

Though I still don't know how to do it in sympy. The answer for matplotlib would be:

import matplotlib.pyplot
from numpy import arange
from numpy import meshgrid

delta = 0.025
xrange = arange(-3.0, 3.0, delta)
yrange = arange(-2.0, 2.0, delta)
X, Y = meshgrid(xrange,yrange)
F = X**2 + Y**2 -4
G = 0
matplotlib.pyplot.contour(X,Y,(F-G),[0])
matplotlib.pyplot.show()

I'm still having trouble, but I'll post it in a different question.