import random
import string,os

for i in range(500):
    ran_str = ''.join(random.sample(string.ascii_letters + string.digits, random.randint(5, 12)))
    fp = open(os.getcwd()+"/createdfile/" + str(i)+'_'+ran_str + ".txt", 'w+')
    str1 = ''.join(random.sample(string.ascii_letters + string.digits, random.randint(20, 40)))
    for index in range(12):
    	str1 = str1+str1
    fp.write(str1)
    fp.close()