1. I want to create time that is based on `Year-Month-day`. Lets call it `a_date`.
2. I want to take current time with for example `datetime.now()` and format it to same format above. Lets call it `b_date`.
3. I want to tell if `b_date <= a_date`.

How do I do that? I tried several things with `time.mktime()` and `strftime`, but I'm little confused.