# Import the module for plotting
# _*_ coding:utf-8 _*_
import numpy as np
import matplotlib.pyplot as plt
if __name__ == '__main__':
a = 1
t = np.linspace(-5, 5, num=1000)
x = a * np.power(np.cos(t), 3)
y = a * np.power(np.sin(t), 3)
plt.plot(x, y, 'r-', linewidth=0.5)
plt.savefig('星形线.jpg')
plt.grid()
plt.show()