Articulate the code with respect to reusability.

def is_year(year):
if year % 4 == 0:
print(‘Year is divisible by 4’)
else:
print(‘Year is not divisible by 4’)

The given code is not very reusable as it is written within a single function without any input or output parameters. It also directly prints the result instead of returning it as a value.

To make the code more reusable, we can modify it as follows:

def is_year_divisible_by_4(year):
if year % 4 == 0:
return True
else:
return False

Now, the code is defined within a function called "is_year_divisible_by_4" which takes the "year" as a parameter. Instead of printing the result directly, it returns either True or False depending on whether the year is divisible by 4 or not.

By making these changes, the code can be readily used in other parts of the program by simply calling the function and passing the year as an argument. This increases the reusability of the code.