Pysqlite storing file as blob example

[rustyhowell at gmail.com]

I'm trying to store binary data in a sqlite database and call into the
db using pysqlite 3.
What I've got so far is this:

import sqlite
con = sqlite.connect(DB_PATH)
cur = con.cursor()
query = """create table t1(
            ID INTEGER PRIMARY KEY,
            data    BLOB );"""
cur.execute(query)
con.commit()
b = buffer('/path/to/binary/file')
query = 'insert into table (ID,data) values (1,?);'
result = cur.execute(query,(b))
con.commit()

The error message I get is :
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.5/site-packages/sqlite/main.py", line 255, in
execute
    self.rs = self.con.db.execute(SQL % parms)
TypeError: not all arguments converted during string formatting

I also read about using adapters, but I haven't found any clear info
on how to use them.
Does anyone have an example of storing binary data (image) in sqlite
using pysqlite?