Filewrite.py

'''
import csv
open("test.csv","w").close()
dat = ['one potato','two potato']
dat2 = ['3 potato','four']
dat3 = ['8 potatos','9 potatoes']
mydat = [dat,dat2,dat3]
with open("test.csv","a") as csvfile:
  mywriter = csv.writer(csvfile, delimiter=",")
	for x in mydat:
		mywriter.writerow(x)
'''
import time
import csv
#def data
dat = []
for x in range(500000):
	dat.append(["8times"] * 5)

start = time.time()

open("test.csv","w").close()
with open("test.csv","a") as csvfile:
	mywriter = csv.writer(csvfile, delimiter=",")
	for x in dat:
		mywriter.writerow(x)
print (time.time() - start)


start = time.time()
open("test.csv","w").close()
for x in range(500000):
	with open("test.csv","a") as csvfile:
		mywriter = csv.writer(csvfile, delimiter=",")
		mywriter.writerow(dat[x])

print (time.time() - start)