import math, random, pytz, string
# Generate random string
def randomStringFunctionForImage():
	import random,string
	str1 = ''.join((random.choice(string.ascii_letters) for x in range(8)))
	str1 += ''.join((random.choice(string.digits) for x in range(4)))
	sam_list = list(str1)
	random.shuffle(sam_list)
	finalString = ''.join(sam_list)
	return finalString