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Challenge 96: Is It the Weekend?

curriculum/challenges/english/blocks/daily-coding-challenges-python/68f6587287ad1f4ad39b0c82.md

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--description--

Given a date in the format "YYYY-MM-DD", return the number of days left until the weekend.

  • The weekend starts on Saturday.
  • If the given date is Saturday or Sunday, return "It's the weekend!".
  • Otherwise, return "X days until the weekend.", where X is the number of days until Saturday.
  • If X is 1, use "day" (singular) instead of "days" (plural).
  • Make sure the calculation ignores your local timezone.

--hints--

days_until_weekend("2025-11-14") should return "1 day until the weekend.".

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(days_until_weekend("2025-11-14"), "1 day until the weekend.")`)
}})

days_until_weekend("2025-01-01") should return "3 days until the weekend.".

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(days_until_weekend("2025-01-01"), "3 days until the weekend.")`)
}})

days_until_weekend("2025-12-06") should return "It's the weekend!".

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(days_until_weekend("2025-12-06"), "It's the weekend!")`)
}})

days_until_weekend("2026-01-27") should return "4 days until the weekend.".

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(days_until_weekend("2026-01-27"), "4 days until the weekend.")`)
}})

days_until_weekend("2026-09-07") should return "5 days until the weekend.".

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(days_until_weekend("2026-09-07"), "5 days until the weekend.")`)
}})

days_until_weekend("2026-11-29") should return "It's the weekend!".

js
({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(days_until_weekend("2026-11-29"), "It's the weekend!")`)
}})

--seed--

--seed-contents--

py
def days_until_weekend(date_string):

    return date_string

--solutions--

py
from datetime import datetime

def days_until_weekend(date_string):
    date = datetime.strptime(date_string, "%Y-%m-%d").date()
    day_of_week = date.weekday()

    if day_of_week == 5 or day_of_week == 6:
        return "It's the weekend!"

    days_until_saturday = 5 - day_of_week
    return f"{days_until_saturday} day{'s' if days_until_saturday != 1 else ''} until the weekend."