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Python Functional Python Functional Workhorses Map and Filter

Posted by Britt Danzer
Britt Danzer
19,539 Points

Keep getting error message didn't get correct items in birth_dates

I'm unsure why this is returning an error when in VS code it is returning the correct answer

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 today.year*365 - datetime.year*365 >= 4745

def date_string(datetime):
    return datetime.strftime("%B %d")

birth_dates = map(date_string, filter(is_over_13, birthdays))
Cheo R
Cheo R
37,150 Points
Cheo R
Cheo R
37,150 Points

I copied and pasted your code. Passed with n problem. Try restarting the exercise.

1 Answer

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points
KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points

I think there is a problem with your is_over_13 formula. What you have considers the year but not the number of days. To make it a little easier to see divide by 365 and you have:

today.year - datetime.year >= 13.

Use the second birthday, datetime.datetime(2006, 8, 9), to test

With your formula:

2019 - 2006 >= 13 is true. However the person won't be 13 until 8,9 so the answer should be false.

I used:

(today - datetime).days

instead.