The factory method
The factory method is based on a single function written to handle our object creation task. We execute it, passing a parameter that provides information about what we want, and, as a result, the wanted object is created.
Interestingly, when using the factory method, we are not required to know any details about how the resulting object is implemented and where it is coming from.
Real-world examples
An example of the factory method pattern used in reality is in the context of a plastic toy construction kit. The molding material used to construct plastic toys is the same, but different toys (different figures or shapes) can be produced using the right plastic molds. This is like having a factory method in which the input is the name of the toy that we want (for example, duck or car) and the output (after the molding) is the plastic toy that was requested.
In the software world, the Django web framework uses the factory method pattern for creating the fields of a web form....
