Why is Python datetime time delta not found?

import time
from datetime import datetime, date, time, timedelta

dayDates = []
today = datetime.now()
dayDates.append(today.strftime("%m%d%Y"))
for i in range(0,14):
    day = today + datetime.timedelta(days=i)
    print day

The error that you are getting says, that datetime has no attribute timedelta. It happens, because you have imported from datetime specific things. In order to access timedelta now you type timedelta instead of datetime.timedelta.

import time
from datetime import datetime, date, time, timedelta

dayDates = []
today = datetime.now()
dayDates.append(today.strftime("%m%d%Y"))
for i in range(0,14):
    day = today + timedelta(days=i)
    print day

Like that, your code should work properly. Also, pay closer attention to the error messages and try to read them carefully. If you focus enough, you often can sort out the problem basing on them on your own.