使用Python在CSV中製造30w條數據

使用Python在CSV中製造30w條數據

import csv


# write csv
with open ("test30w.csv", "wb+") as f:
    writer = csv.writer(f)

    list_write = ("testttttttt{0}".format(i) for i in xrange(300000))
    [writer.writerow([x]) for x in list_write]



# read csv
with open("test30w.csv", "r") as f:
    reader = csv.reader(f)
    for line in reader:
        print line