Execute mysql query and write to file utilizing a streaming cursor

mysql2file.py

#! /usr/bin/env python

from sys import argv
import csv
import MySQLdb
from MySQLdb import cursors

mysql_params = [argv[1], argv[2], argv[3], argv[4], argv[5]]
output_file = argv[6]
mysql_query = argv[7]

# MySQL connection initialization
try:
	mcon = MySQLdb.connect(host=params[0], port=params[1], user=params[2], passwd=params[3], db=params[4], use_unicode=True, cursorclass = MySQLdb.cursors.SSCursor)
	mcur = mcon.cursor()
except MySQLdb.Error, e:
	print "Error %d: %s" % (e.args[0],e.args[1])
	sys.exit(1)

mcur.execute("SET NAMES 'utf8';")
mcur.execute("SET @@NET_WRITE_TIMEOUT = 900;")
return mcur, mcon

# Write MySQL result set to CSV line by line
print "[!] Executing MySQL query"
mcur.execute(mysql_query)

file = open(output_file, 'w')
writer = csv.writer(file, delimiter = delim, quotechar = '"', quoting = csv.QUOTE_MINIMAL)
print "[!] Writing result set to file '"+output_file+"'"
while True:
	# Get one record from result set
	row = mcur.fetchone()
	# If no records left, break loop
	if not row:
		break
	
	# Write record to file in comma-delimited format
	writer.writerow(row)
	
file.close()