Python Cookbook, 2nd Edition Recipe 7.10. Storing a BLOB in a MySQL Database - Python code
import MySQLdb, cPickle
# Connect to a DB, e.g., the test DB on your localhost, and get a cursor
connection = MySQLdb.connect(db="test")
cursor = connection.cursor( )
# Make a new table for experimentation
cursor.execute("CREATE TABLE justatest (name TEXT, ablob BLOB)")
try:
# Prepare some BLOBs to insert in the table
names = 'aramis', 'athos', 'porthos'
data = { }
for name in names:
datum = list(name)
datum.sort( )
data[name] = cPickle.dumps(datum, 2)
# Perform the insertions
sql = "INSERT INTO justatest VALUES(%s, %s)"
for name in names:
cursor.execute(sql, (name, MySQLdb.escape_string(data[name])) )
# Recover the data so you can check back
sql = "SELECT name, ablob FROM justatest ORDER BY name"
cursor.execute(sql)
for name, blob in cursor.fetchall( ):
print name, cPickle.loads(blob), cPickle.loads(data[name])
finally:
# Done. Remove the table and close the connection.
cursor.execute("DROP TABLE justatest")
connection.close( )
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