csv file splitter

csv_split.py

import csv
# Configuration
header_line = 1
limit = 65000
target_file = 'file-to-split.csv'
# Initial output file
iterator = 0
new_file_prefix = target_file.replace('.csv','')+'_split_'
file_num = 1
# Reading file
with open(target_file, 'r') as csvfile:
	reader = csv.reader(csvfile, delimiter=',')
	for row in reader:
		iterator+=1
		if iterator == header_line:
			header = row			# Storing the header row for future files
			out_file = open(new_file_prefix+str(file_num)+'.csv','w')
			writer = csv.writer(out_file, delimiter=',', quoting=csv.QUOTE_MINIMAL)
			writer.writerow(header)	# First file's header row being written
			continue
		if (iterator % limit) == 0:	# When we hit the row-limit, close the file and open a new one
			out_file.close()
			file_num+=1
			out_file = open(new_file_prefix+str(file_num)+'.csv','w')
			writer = csv.writer(out_file, delimiter=',', quoting=csv.QUOTE_MINIMAL)
			writer.writerow(header)
			print "New file started at line: "+str(iterator)
		writer.writerow(row)