forge

UML Design

    +-----------------+                    +-------------------+                                     +-------------------+  
    |   CarFactory     |      <>---->         |    Car                             |<>------|           CreateModel()  |
    +-----------------+                      +-------------------+                                   +-------------------+

                                                 |       |                                                  |       |
                                                 |       |                                                  |       |
                                                    ""                                                          "
                                                    ""                                                          ""
                                                    ""                                                          ""

                                    |   service-criteria()  |                                         +-------+  +-------+  +-------+
                    
            | +criteria: ServiceCriteria(engine) |  | +criteria: ServiceCriteria(battery) |               |Engine |  |Battery|  |...    |
                                                                                                    
                                                                                                       +-------+  +-------+  +-------+
                    +-----------------+  +-------------------+
                            |                       |
                            |                       |                                                           |           |
                                                                                                                 |          |
                                                                                                     +-------+  +-------+  +-------+
                                                                                                     +check_service_criteria()

                            | +check_service(): |                 
                                                                                                    +-------+  +-------+  +-------+
                            +-------------------+                      
    
    
     | +name: str     |       
     
     
    | +name: str        |        |                   |
    | +add_part(part) |       |                   |        | +check_service(): |
    |                 |       | +set_service_criteria()|  |   bool            |
    +-----------------+       +-------------------+        +-------------------+
    
    
    
    
    
    | +name: str     |       | +name: str        |        |                   |
    | +add_part(part) |       |                   |        | +check_service(): |
    |                 |       | +set_service_criteria()|  |   bool            |
    +-----------------+       +-------------------+        +-------------------+
                            /            \

Directory

    project/
            ├── backend/
                   └── batteries/
                    └── engines
            ├── __init__.py