（这个方法是我提出的）

使用以下脚本

import msvcrt
import os  
import sys
import matplotlib.pyplot as plt
import matplotlib.image as mpimg

os.system('ls *.jpg > figlist.txt')
filename=r'figlist.txt'
nosignal=open('nosignal.txt','w')
rfi=open('rif.txt','w')
maybe=open('maybe.txt','w')
pulsar=open('pulsar.txt','w')
for line in open(filename,'r'):
   #os.system('i_view32 '+line) # doesn't work, focus changes
   #os.system('i_view32 '+line) # doesn't work, focus changes
   #os.system('taskkill /f /im i_view32')
   right=0
   while (right==0):
         #choose=raw_input("Enter 1-5 to choose, enter x to quit:")
     #image = mpimg.imread(line[:-1])
     #plt.imshow(image)
         #plt.show()
     print "Press Esc key to kill the irfanview window"
         os.system('i_view32 '+line) # doesn't work, focus changes
                                 # use Esc to kill irfanview window
     print "1. No signal 2. RFI 3. Maybe 4. Pulsar"
     print "Enter 1-4 to choose, enter x to quit:"
         choose=msvcrt.getch()
         if (choose == 'x'):
             right=1
             sys.exit()
         elif(choose == '1'):
             right=1
             print choose
         nosignal.write(line)
         elif(choose == '2'):
             right=1
             print choose
         rfi.write(line)
         elif(choose == '3'):
             right=1
             print choose
         maybe.write(line)
         elif(choose == '4'):
             right=1
             print choose
         pulsar.write(line)
         #elif(choose == '5'):
         #    right=1
         #    print choose
         else:
             right=0
   
nosignal.close()
rfi.close()
maybe.close()
pulsar.close()