psycopg2/examples/simple.py

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# simple.py - very simple example of plain DBAPI-2.0 usage
# currently used as test-me-stress-me script for psycopg 2.0
#
# Copyright (C) 2001-2003 Federico Di Gregorio <fog@debian.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 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)
class SimpleQuoter(object):
def sqlquote(x=None):
return "'bar'"
import sys, psycopg
if len(sys.argv) > 1:
DSN = sys.argv[1]
print "Opening connection using dns:", DSN
conn = psycopg.connect(DSN)
print "Encoding for this connection is", conn.encoding
curs = conn.cursor()
curs.execute("SELECT 1 AS foo")
print curs.fetchone()
curs.execute("SELECT 1 AS foo")
print curs.fetchmany()
curs.execute("SELECT 1 AS foo")
print curs.fetchall()
conn.rollback()
sys.exit(0)
curs.execute("SELECT 1 AS foo", async=1)
curs.execute("SELECT %(foo)s AS foo", {'foo':'bar'})
curs.execute("SELECT %(foo)s AS foo", {'foo':None})
curs.execute("SELECT %(foo)f AS foo", {'foo':42})
curs.execute("SELECT %(foo)s AS foo", {'foo':SimpleQuoter()})