Requirement: python, PILLOW not PIL (because of transparent problems)
I have written this script to unpack png files in the plist file packed by TexturePacker
First, make sure you have both the png and plist files in the same directory, in my case: image.plist and image.png
Second, same the following script as plist.py
Then,
python plist.py image
It will generate lots of png files to a directory named freeGifts
Good luck!