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Chaining functions - i’m lost

Maybe it’s new year fuzz but I have no clue where to go with this challenge and everything I have tried results in “Bummer, Try Again!” I can’t find anything in the community section either.

I get that I’m supposed to be using Map() and Filter() somewhere. So my thinking is that I should be creating a function in step 1, that effectively loops through “birthdays” and compares them to “today”. Then if the number of years is 13 or greater, it returns a new iterable with those results.

That’s my thinking, but I just can’t seem to write anything that gives me the right result, or even a result that yields anything other than “Bummer, Try Again”. Which I will reiterate, is an entirely pointless message. :(

So wise owls, I could use a steer in the right direction.

Happy New Year :)

birthdays.py
```import datetime

birthdays = [
datetime.datetime(2012, 4, 29),
datetime.datetime(2006, 8, 9),
datetime.datetime(1978, 5, 16),
datetime.datetime(1981, 8, 15),
datetime.datetime(2001, 7, 4),
datetime.datetime(1999, 12, 30)
]

today = datetime.datetime.today()

def is_over_13(datetime):
return (map(today - birthdays = 13))
```

Hey Andy Hughes !

So what this question is asking you to do, is to create a function that takes in a datetime which you have done here (but we will need to change the word `datetime` to `dt` so that it doesn't confuse the python interpreter):

```def is_over_13(dt):
```

Then we need to return "whether or not the difference between that datetime and today is 4745 days (13 years × 365 days, ignoring leap years) or more."

So what we are returning for this part challenge is `(today - dt)` which will get the difference between the passed in datetime and today. Then we need to access the `.day` in that datetime, and return whether it is `>= 4745`.

Hopefully that helps you move on to the next 2 sections. You will be using map and filter in the 3rd stage. Let us know if you are still stuck!

Thank you Mel Rumsey for your comment. I finally managed to get part one correct. Originally, I did start with:

```is_over_13(datetime):
return (today - datetime)
```

At that point I think I just started to over complicate things by thinking it all needed to be one line of code so I was trying to do comprehension and math and I just confused myself even more.

Your comments, helped me to figure out that I needed first to acquire the difference and then to check that difference against the 13yrs. So I ended up with the below code, which passed step 1:

```def is_over_13(dt):
diff = (today - dt)
return (diff.days >= 4745)
```

That’s what happens when you have a break of three weeks in between videos! :)