psycopg2/examples/mogrify.py

# mogrify.py - test all possible simple type mogrifications
# -*- encoding: latin1 -*-
#
# Copyright (C) 2004-2010 Federico Di Gregorio  <fog@debian.org>
#
# psycopg2 is free software: you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# psycopg2 is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
# License for more details..

## put in DSN your DSN string

DSN = 'dbname=test'

## don't modify anything below this line (except for experimenting)

import sys, psycopg2

if len(sys.argv) > 1:
    DSN = sys.argv[1]

print("Opening connection using dsn:", DSN)

conn = psycopg2.connect(DSN)
print("Encoding for this connection is", conn.encoding)

curs = conn.cursor()
curs.execute("SELECT %(foo)s AS foo", {'foo':'bar'})
curs.execute("SELECT %(foo)s AS foo", {'foo':None})
curs.execute("SELECT %(foo)s AS foo", {'foo':True})
curs.execute("SELECT %(foo)s AS foo", {'foo':42})
curs.execute("SELECT %(foo)s AS foo", {'foo':u'yatt<EFBFBD>!'})
curs.execute("SELECT %(foo)s AS foo", {'foo':u'bar'})

print(curs.mogrify("SELECT %(foo)s AS foo", {'foo':'bar'}))
print(curs.mogrify("SELECT %(foo)s AS foo", {'foo':None}))
print(curs.mogrify("SELECT %(foo)s AS foo", {'foo':True}))
print(curs.mogrify("SELECT %(foo)s AS foo", {'foo':42}))
print(curs.mogrify("SELECT %(foo)s AS foo", {'foo':u'yatt<EFBFBD>!'}))
print(curs.mogrify("SELECT %(foo)s AS foo", {'foo':u'bar'}))

conn.rollback()