Go-Jek-Parking-Lot-Assignment-Python

Go-Jek Parking Lot Assignment (Python)

1. Problem Statment

Design a Parking lot which can hold n Cars. Every car been issued a ticket for a slot and the slot been assigned based on the nearest to the entry. The system should also return some queries such as:

• Registration numbers of all cars of a particular colour.
• Slot number in which a car with a given registration number is parked.
• Slot numbers of all slots where a car of a particular colour is parked.

2. Solution Approach

A car consist of Registration number, slot number and it's colour. Likewise our Parking Lot consist slots. For not making it too complicated, I choose a python dictionary for storing cars on slots and implemented the functionalities as accordingly.

3. Supported Commands

• create_parking_lot <n>
  To create a Parking lot. Where n is the size of the parking lot

• park <registration_number> <colour>
  To park the car in the parking lot and prints the allocated slot in the parking lot. Where registration_number is given registration number for the car and colour is given colour for the car

• leave <slot>
  To leave the parking lot from desired slot and prints the leaving slot. given slot number. Where slot is given sloat number

• status
  To check the status of Parking Lot

• slot_numbers_for_cars_with_colour <colour>
  To prints the registration number of the cars for the given colour. Where color is given colour

• slot_number_for_registration_number <registration_number>
  prints the slot number of the cars for the given number. Where registration_number is given registration number.

• registration_numbers_for_cars_with_colour <colour>
  To prints the slot number of the cars for the given colour. Where colour is given colour.

4. Running Application

4.1 Running the application in File mode:

./ParkingLot.py input.txt

4.2 Running the application in Interactive mode:

./ParkingLot.py

5. Test Cases

• Total number of test cases - 14
• Code coverage - 86%

5.1 For running the tests

python Tests.py

5.2 For calculating code coverage

coverage run Tests.py 
coverage report

6. Running the application in a Docker Container

Build the image:

docker build -t parkinglot:1.0 .

6.1 Running the application in Interactive mode:

docker run -it parkinglot:1.0 ./ParkingLot.py

6.2 Running the application in File mode:

docker run -it parkinglot:1.0 ./ParkingLot.py input.txt

7. Possible errors

When using running application in Docker, if it gives this error:

docker: Error response from daemon: OCI runtime create failed: container_linux.go:348: starting container process caused "exec: \"./ParkingLot.py\": permission denied": unknown.

just change the permissions by running

sudo chmod +x ./ParkingLot.py