simple-contour

size = 100
x = linspace(-2*np.pi, 2*np.pi, size)
y = linspace(-2*np.pi, 2*np.pi, size)
z = empty((size, size))
loop over length of x with (i):
    loop over length of y with (j):
        r2 = (x(i)^2 + y(j)^2)
        z(i,j) = sin(x(i))*cos(y(j))*sin(r2)/log(r2+1)