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#!/usr/bin/env python
#import psycopg as db
import psycopg2 as db
import threading
import time
import sys
def query_worker(dsn):
conn = db.connect(dsn)
cursor = conn.cursor()
while True:
cursor.execute("select * from pg_class")
while True:
row = cursor.fetchone()
if row is None:
break
if len(sys.argv) != 2:
print('usage: %s DSN' % sys.argv[0])
sys.exit(1)
th = threading.Thread(target=query_worker, args=(sys.argv[1],))
th.setDaemon(True)
th.start()
time.sleep(1)
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