Python, Sqlite3 - How to convert a list to a BLOB cell

Question

What is the most elegant method for dumping a list in python into an sqlite3 DB as binary data (i.e., a BLOB cell)?

data = [ 0, 1, 2, 3, 4, 5 ]
# now write t         


        

Answer 1

I have the same problem, and I'm thinking about solving this in another way.

I think the pickle module is done exactly for something like this (serialization on python objects)

Example (this one is for dumping to file... but I think it's easily changeble for db storage)

Saving:

# Save a dictionary into a pickle file.
import pickle
favorite_color = { "lion": "yellow", "kitty": "red" }
pickle.dump( favorite_color, open( "save.p", "w" ) )

Loading:

# Load the dictionary back from the pickle file.
import pickle
favorite_color = pickle.load( open( "save.p" ) )

IMHO I think this way is more elegant and safer(it works for any python object).

That's my 2 cents

UPDATE: After doing a bit of search on my idea, they show some gotchas on my solution ( I can't make sql searches on that field). But I still think that it's a decent solution (if you don't need to search that field.