python画图后怎么保存

import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
from matplotlib.pyplot import plot,savefig

fig, ax = plt.subplots(figsize=(12, 12))
ax.imshow(im, aspect='equal') #im是要显示的图像

savefig("D:/1.jpg")

plt.show()

from Tkinter import *
from turtle import *
import turtle


forward(100)
ts = turtle.getscreen()

ts.getcanvas().postscript(file="duck.eps") #.eps文件即postscript脚本