著名心型线画法

import numpy as np
import matplotlib.pyplot as plt
q=np.linspace(0,2*np.pi,50)
x=16*(np.sin(q)**3)
y=13*np.cos(q)-5*np.cos(2*q)-2*np.cos(3*q)-np.cos(4*q)
plt.plot(x,y,'r')
plt.show()