等高线
import numpy as np
import matplotlib.pyplot as pltdef f(x,y):return (1-x/2x**5y**3)*np.exp(-x**2-y**2)
n256
xnp.linspace(-3,3,n)
yx
X,Ynp.meshgrid(x,y)
plt.contourf(X,Y,f(X,Y),8,alpha0.75,cmapviridis)
plt.colorbar()
Cplt.contour(X,Y,f(X,Y),8,colors…