/Python/Python enforcing class variables in subclass

Python enforcing class variables in subclass

class Foo:

    page_name = None
    author = None

    def __init_subclass__(cls, **kwargs):
        for required in ('page_name', 'author',):
            if not getattr(cls, required):
                raise TypeError(f"Can't instantiate abstract class {cls.__name__} without {required} attribute defined")
        return super().__init_subclass__(**kwargs)


class Bar(Foo):
    page_name = 'New Page'
    author = 'eric'

Source: stackoverflow.com

Similar codes

0 vote249 views1 answer
All classification algorithim compare
Python
1 vote285 views2 answers
Python dictonary set default
Python
6 votes279 views2 answers
How to make an infinite loop python
Python
23 votes342 views3 answers
Install django rest framework
Python Django
17 votes284 views3 answers
Create log in python
Python
0 vote277 views1 answer
Django model manager user
Python Django
0 vote299 views1 answer
Python Textfeld lköschen
Python
0 vote256 views1 answer
Numpy symmetrize array
Python
0 vote245 views9 answers
Python code checker and corrector
Python
18 votes387 views3 answers
Django-admin startproject
Python Django