In Python, how can I differentiate between a concrete subclass and a subclass which is still abstract (i.e. not all abstract methods have been implemented)? Consider the following: What is the implementation of is_concrete_class? I could attempt to instantiate each subclass given by __subclasses__() and catch TypeError: Can’t instantiate abstract class <class_name> with abstract methods <…>, but TypeError seems too
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Distinguishing between Pydantic Models with same fields
I’m using Pydantic to define hierarchical data in which there are models with identical attributes. However, when I save and load these models, Pydantic can no longer distinguish which model was used and picks the first one in the field type annotation. I understand that this is expected behavior based on the documentation. However, the class type information is important
How to implement abstract classes over mulitple inheritances? [closed]
Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 1 year ago. Improve this question I have a question on multi level inheritance. I am trying to write classes of the form: I am not planning
How to let the constructor in the subclass inherit the constructor or base class?
I have the following code segment, which is shown as follows along with its output I would like to let the subclass, e.g. Employee, can also inherit the functionality implemented in the constructor of AbstractClass. In specific, the print(‘the salary information’) I added: Answer You need to pass the CURRENT class to super, not the parent. So: Python will figure
Abstract dataclass without abstract methods in Python: prohibit instantiation
Even if a class is inherited from ABC, it can still be instantiated unless it contains abstract methods. Having the code below, what is the best way to prevent an Identifier object from being created: Identifier([‘get’, ‘Name’])? Answer You can create a AbstractDataclass class which guarantees this behaviour, and you can use this every time you have a situation like