Use SQLite as a key:value store

Question

As suggested in comments from Key: value store in Python for possibly 100 GB of data, without client/server and in other questions, SQLite could totally be used as a persist

Answer 1

There is already sqlitedict which appears to meet all your needs.

From the documentation:

>>> from sqlitedict import SqliteDict
>>> mydict = SqliteDict('./my_db.sqlite', autocommit=True)
>>> mydict['some_key'] = any_picklable_object
>>> print mydict['some_key']  # prints the new value
>>> for key, value in mydict.iteritems():
>>>     print key, value
>>> print len(mydict) # etc... all dict functions work
>>> mydict.close()