It’s Boxing Day, we’re stuffed with turkey and wondering what to do with all those leftovers. What’s left to do except watch some festive TV and grab a final mince pie or two?

Hang on. Rustling through the empty sweet-wrappers of our Anvil Advent Calendar, it seems that we have one final app to share with you after all!

# π The Twelve Emoji of Christmas

As you know, the twelve days of Christmas actually start on Christmas Day itself and continue into January - a traditional time of merriment and gifting that inspired the old carol.

Since we already have a fun app for sending emoji to people I figured why not adapt it for a final festive treat?

### https://twelve-emoji-of-christmas.anvil.app

Python’s built in `datetime` module lets us work out if it’s one of the twelve days of Christmas.

``````@anvil.server.callable
def is_xmas_season():
"""
Let's find out if it's one of the twelve days of Christmas
"""
today = date.today()  # Find out today's date

beginning = date(2020, 12, 25)
diff = today - beginning

if diff.days < 13 and diff.days >= 0:
return diff.days + 1

return False``````

If so, we check which emoji gifts to display under our tree - which is easy given Python3’s native support for Unicode strings!

``````@anvil.server.callable
def get_emoji_for_day(n_xmas):
""" Return the right gift emojis for the day of Christmas that you want """
xmas_moji = {
1: 'π¦π³',
2: 'ππ',
3: 'πππ',
4: 'π¦π¦π¦π¦',
5: 'πππππ',
6: 'ππππππ',
7: 'π¦’π¦’π¦’π¦’π¦’π¦’π¦’',
9: 'πππππππππ',
10: 'ππππππππππ',
11: 'π·π·π·π·π·π·π·π·π·π·π·',
12: 'π₯π₯π₯π₯π₯π₯π₯π₯π₯π₯π₯π₯'}

moji = [xmas_moji[n] for n in range(1, n_xmas)]
return '\n'.join(moji)``````

The final touch: using Anvil’s Email Service and User Service I created a simple subscription flow that allows users to sign up for daily festive updates with the right emoji gifts in their inbox.

Unsubscription is easy, using a custom token generated for each user to keep things secure, just like the Fruitmoji app.

## Play with it yourself

Anvil makes it easy to build knock together a front-end with email capability. To check out the source code for this app in more detail, you can clone it using the link below: