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Short preview

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Description:

 

Class Definitions:

1. MissingDataException:

• This is a custom exception class that inherits from the base Exception class.
• It is designed to be raised when there is missing data for a car attribute (make, color, model, or plate number).

2. Cars:

• This class represents a car object with the following attributes:
  • Make: The make of the car.
  • fuel: The type of fuel used by the car (gasoline, diesel, hybrid).
  • model: The model of the car.
  • color: The color of the car.
  • plate number: The plate number of the car.
  • registered: A Boolean indicating whether the car is registered or not (default is False).
• The class provides getter and setter methods for each attribute, as well as comparison methods (__eq__, __le__, __lt__) for plate number comparisons.
• The __str__ method returns a string representation of the car object.

Key functionalities include:

1. Adding Cars:

• Users can input details such as make, model, color, fuel type, and plate number for a new car.
• The "Sign In" checkbox can be used to register the car.
• If the car is already in the predefined allowed cars list (michel.exe), the car is automatically displayed in green after the "Add" button is clicked. If unchecked, the car is displayed in red.

2. Modifying Cars:

• Existing cars in the system can be modified, including changes to make, model, color, fuel type, and plate number.
• The "Sign In" checkbox can be toggled to register or unregister the modified car.
• If the "Sign In" checkbox is checked during modification, the car is marked as "registered" and displayed in green. If the checkbox is unchecked, the car is displayed in red.

 

3. Deleting Cars:

 

• Cars can be removed from the system based on the entered plate number.

4. Sign In Functionality:

• The "Sign In" checkbox, when checked, indicates that the car is registered. If the "Sign In" checkbox is unchecked then this indicates that the car is not registered and is not allowed in the parking.         

• when the "Modify" button is clicked, the changes apply to the list of cars in the system and are still not saved for reopening. Here comes the save button.

5. Saving Data:
   • The "Save" button enables users to save the current state of the cars in the system.
   • The data is stored in files (mydata and mydatafor_reopen), facilitating the reopening of the application and loading the previously saved car information.

 

6. Reopening the Application:
   • Upon reopening, the application loads the saved data from mydatafor_reopen into the loon list, representing the list of allowed (registered) cars.
   • All cars in the system are cross-checked against the loon list to determine their registration status, and they are displayed in the appropriate color (green or red).

conclusion:

This application provides a user-friendly interface for managing and tracking cars in a parking system, allowing flexible registration based on the user's choice, with automatic registration in green for cars already in the predefined list (michel.exe).

 

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