I want to generate random month, day, hour, min, sec in python but in this code generating random month is not working. How can I do this?

from datetime import datetime
from random import randrange
from datetime import date
import random
import datetime 

arr=""
def random_date(start,l):
   current = start
   while l >= 0:
      curr = current + datetime.timedelta(month=randrange(12),days=randrange(7),hours=randrange(12),minutes=randrange(60),seconds=randrange(60))
      yield curr
      l-=1

startDate = datetime.datetime(2013, 9, 20,13,00,00)

arr=[]
for x in random_date(startDate,10):
  arr.append(x.strftime("%d/%b/%y %H:%M:%S"))

for x in range(0,len(arr)):
   print(arr[x])