Write the desired Python code, taking into account the following.

Create a class named "Vehicle" and let the class have $4$ properties named brand, model, Yk $($fuel capacity$)$ and Ym $($Fuel amount$).$

Create a new method that displays the vehicle's current fuel amount.

Create a new method for filling the vehicle's tank completely.

When the vehicle wants to buy a certain amount of fuel, it takes into account the fuel capacity and fuel amount.

Create a new method to update the fuel. If the tank is full, provide information that the tank is full. If not, update the current fuel amount.

All vehicles consume $5$ liters of fuel per $100$ km$.$ Develop a method that shows how many liters of fuel the vehicle consumes when it travels a certain km and how much fuel it has left.