Q$5-$ Car Inventory $(1\mathrm{.}4$ points$)$

For this question you will create an object to store information on an inventory of cars.

Create a class called CarInventory

Instance Attibutes:

n$\_$cars : intcars : list

Methods

add$\_$car$()$compare$()$

Details:

The constructor $(\_\_$init$\_\_)$ should take no inputs, but set n$\_$cars to $0,$ and cars to be $[]($an empty list$).$

Method: add$\_$car

Input$($s$)$:

manufacturer : string

model : string

year : int

mpg : float

Procedure$($s$)$:

Create a dictionary from the values passed with the corresponding keys 'manufacturer', 'model', 'year' and $\text{'}$mpg$\text{'}$

Append this dictionary to the cars attribute

Increment the n$\_$cars attribute by $1$

Method: compare

This method will compare all the cars on a specified attribute $(\text{'}$year$\text{'},$ or $\text{'}$mpg$\text{'}),$ and find the highest and lowest values. It will return either the highest of lowest value, depending on the setting in a parameter direction.

Input$($s$)$:

attribute : string

direction : string, default: 'highest'

Procedure$($s$)$:

Initialize a variable called lowest to be the $0$th element of cars, and another variable highest to be the same

Loop through each car in cars

If the value of the attribute for the car is less than the car stored as lowest, replace lowest to be the current carSimilarly, if the value of the attribute for the car is greater than the car stored as highest, replace highest to be the current car

After the loop, if the value of direction is 'highest', set a new variable output to be the variable highest

Else if the value of direction is 'lowest', set output to be lowest

Return output