Leap Year Function

First, write a function is$\_$leap$\_$year which returns a boolean $($either True or False$)$ depending on whether the year should be a leap year.

Our current definition of a leap year is as follows:

Years divisible by $4$ are leap years, unless the year is also divisible by $100.$ Years divisible by $4$ and $100$ are leap years only if they are also divisible by $400.$

So for example:

$2023$ is not a leap year because it is not divisible by $4.$

$1992$ is divisible by $4,$ but it is not divisible by $100,$ so it is a leap year.

$1900$ is divisible by $4,$ and divisible by $100.$ Since it is not also divisible by $400,$ it is not a leap year.

$2000$ is divisible by $4$ and by $100.$ However, it is also divisible by $400,$ so $2000$ is a leap year.

One approach might be to think of some decisions:

Is the year divisible by $4?$

No: Not a leap year.

Yes: Then is the year divisible by $100?$

No: The year is a leap year.

Yes: Then is it also divisible by $400?$

Yes: The year is a leap year.

No: The year is not a leap year.

Your function will either require some if$/$else $($or elif$)$ statements, or you will need an expression using boolean operators. Either approach is fine.

Write the is$\_$leap year function which takes a single whole number and returns whether or not the year should be a leap year: