This article introduces how to retrieve data from LevelDB files, a type of database, using Python. To handle LevelDB, Python’s plyvel seems to be good.
sudo pip2 install plyvel
import plyvel
db = plyvel.DB('/home/yuis/rsync/leveldb')
for key, value in db:
print('"{0}"\t"{1}"'.format(key, value))
python dev.py
Getting data inside a google Chrome IndexedDB from Bash or Python - Stack Overflow