绘制折线图

theta = [x*pi/180 for x in range(0,360,5)]
r=[x/5 for x in range(0,360,2)]
x= [ri*cos(th) for ri,th in zip(r,theta) ]
y=[ri*sin(th) for ri ,th in zip(r,theta)]
fig,ax = plt.subplots()
ax.plot(x,y)

ax.scatter(x,y,s=range(72),c=range(72)) # 绘制大小 与颜色