quiesce.py script (MySQL)

import MySQLdb
 import os
 import time
 import datetime
 dt=datetime.datetime.now().strftime("%I:%M%p on %B %d, %Y")
 file1 = open("/scripts/pre-freeze.log","a+" )
 try:
 conn = MySQLdb.connect ('localhost' , 'root' , 'password' )
 cur = conn.cursor()
 cur.execute ("select version()")
 data = cur.fetchone()
 file1.write (dt)
 file1.write ("-------------------------------------------\n")
 file1.write ("-------------------------------------------\n")
 file1.write ("\t MySQL version is %s: "%data)
 file1.write ("-------------------------------------------\n")
 file1.write ("-------------------------------------------\n")
 except:
 file1.write (dt)
 file1.write("\t unable to connect to MySQL server\n")
 file2 = open ('/tmp/freeze_snap.lock', 'w')
 file2.close()
 try:
 cur.execute (" flush tables with read lock ")
 file1.write (dt)
 file1.write ("\t using quiesce.py script - quiesce of database successful \n")
 except:
 file1.write(dt)
 file1.write( "\n unexpected error from MySQL, unable to do flush tables with read lock, Please check MySQL error logs for more info\n")
 while True:
 check = os.path.exists ("/tmp/freeze_snap.lock")
 if check == True:
 continue
 else:
 break