python 读取git图片每一帧

def processImage(infile):
try:
im = Image.open(infile)
except IOError:
print "Cant load", infile
sys.exit(1)
i = 0
mypalette = im.getpalette()

try:
while 1:
#im.putpalette(mypalette)
new_im = Image.new("RGBA", im.size)
new_im.paste(im)
new_im.save('0000_'+str(i)+'.png')

i += 1
im.seek(im.tell() + 1)
except EOFError:
pass # end of sequence