/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

1 vote235 views2 answers
Urllib quote_plus
Python
0 vote257 views1 answer
How to get wikipedia photos using wikipedia module ip python
Python
0 vote278 views1 answer
Django edit model without loading from db
Python Django
1 vote200 views1 answer
Keep the user logged in even though user changes password django
Python
0 vote206 views1 answer
Pandas dataframe hist title
Python
0 vote195 views1 answer
2 plater die game in python
Python
0 vote190 views1 answer
Python format inverse
Python
0 vote189 views1 answer
Draw a bow tie in python
Python
1 vote232 views1 answer
How to do key sensing in python
Python
3 votes227 views2 answers
Print first word of a string python and return it
Python