Improve disable_init docs and export the metaclass
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Signed-off-by: Leandro Lucarella <[email protected]>
This effectively make it public. We need this in case users want to combine the metaclass with other metaclasses, like `abc.ABCMeta`. Signed-off-by: Leandro Lucarella <[email protected]>
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The new recommendation actually doesn't work. The correct way to do it would be: ```py super(cls, self).__init__() ``` But this is not even necessary when you are applying the decorator to a simple class that doesn't inherit from anything (i.e. inherits from `object` directly). Applying the decorators to other sub-classes, is much trickier than just addint the `super()` call, so we will just not recommend or support doing that and keep the usage documentation simple. This reverts commit 073b921. Signed-off-by: Leandro Lucarella <[email protected]>
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Pull Request Overview
This pull request improves the documentation for the disable_init decorator and exports the NoInitConstructibleMeta metaclass. Key changes include updating docstrings and examples to clarify the use of the metaclass, removing unnecessary calls to super().init(self) in factory methods, and adjusting keyword arguments handling in error generation functions.
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src/frequenz/core/typing.py:176
- [nitpick] The documentation example uses 'meta' to specify the metaclass. Consider using the standard 'metaclass' keyword (i.e. 'class MyClass(metaclass=NoInitConstructibleMeta):') for clarity, if that is supported in your context.
class MyClass(meta=NoInitConstructibleMeta):
Improve the docs to point out that disabling the `__init__` for existing classes via a sub-class is complicated, so it is only recommended to use both the decorator and metaclass on classes inheriting from `object` directly. Also improve the documentation of `NoInitConstructibleMeta` to be more complete and give an example on using with `abc.ABCMeta`. Signed-off-by: Leandro Lucarella <[email protected]>
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ela-kotulska-frequenz
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Mar 28, 2025
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Improve the docs to point out that disabling the
__init__for existing classes via a sub-class is complicated, so it is only recommended to use both the decorator and metaclass on classes inheriting fromobjectdirectly.Also make
NoInitConstructibleMetapublic (remove the_prefix from the name) and improve its documentation to be more complete and give an example on using withabc.ABCMeta.