When is Friday? When is Friday?
Elementary+
RU English

Friday is an awesome day. It's the end of the week after which you can just relax and attend to all of the things you've been pushing away. It's really good to know how many days you still have to wait, isn't it?

Your task is to write a function that will count how many days are left from a certain date to Friday. The argument will be a particular date in a string format looking like this: 'dd.mm.yyyy', where 'dd' - day, 'mm' - month, and 'yyyy' - year.
For example, if that given day is Thursday, then the answer will be 1. If that day is Monday, the result is 4. And if that day is Friday, the function should return 0.

example

Input: Date as a string.

Output: The amount of days left until Friday.

Example:

friday('23.04.2018') == 4
friday('01.01.1999') == 0

How it is used: The ability of working with dates can be a very useful skill in many spheres - from the simple events ordering by dates to the global tendencies analysis which changes with time.

Precondition :
1 <= year <= 3000

Settings
Code:
CheckiO Extensions

CheckiO Extensions allow you to use local files to solve missions. More info in a blog post.

In order to install CheckiO client you'll need installed Python (version at least 3.8)

Install CheckiO Client first:

pip3 install checkio_client

Configure your tool

checkio --domain=py config --key=

Sync solutions into your local folder

checkio sync

(in beta testing) Launch local server so your browser can use it and sync solution between local file end extension on the fly. (doesn't work for safari)

checkio serv -d

Alternatevly, you can install Chrome extension or FF addon

checkio install-plugin
checkio install-plugin --ff
checkio install-plugin --chromium

Read more here about other functionality that the checkio client provides. Feel free to submit an issue in case of any difficulties.

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