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I had exactly this problem today and found that this works: from __future__ import annotations class a(type): def __init__(self, n): self.n = n def foo() -> a: return a(...

Very interesting insight, thank you!

There is unforetunately no way to achieve this in Protege. You will have to assign the class for each individual.

It's been a few decades since I programmed in C++, but as far as I recall, C++ allows multiple inheritance. Most other languages, like Java or C#, only allow single inheritance. If for no other ...

This is the old 'is-a' versus 'has-a' question. Only you can answer it, for your two specific classes. Is B a kind of A? or does A just have-a B? Is class B really a subtype of class A? or is it just ...

I don't see too much non-French here. A lot of these terms are written the same in English and French. For as far as I can see this is a fully French model. That is also a bit of a problem, since the ...

What you should fix first of all, is that mixture of French and English in your naming of entities and properties.

You should design the database before the software's class structure. Currently, you're missing keys/ids for many of your objects-- but the importance of this depends on what you plan to use the ...

tl;dr You can only achieve what you want via a constructor, not also with a cast. Thus, your only options are: # Method syntax [Checkbox]::new($null).ToString() # New-Object alternative (more ...

The other differences are already answered but I also want to add one which is not listed in this answer lists and that is: - IDs in HTML can also be used to create bookmarks (fragment navigation) ...

I have just had the exact same issue, and seeing as this question, which is as yet unanswered, helped me see the issue, I decided to post an answer. For hours I just could not see what my particular ...

For reasons I don't want to get into, Okay, let's play a guessing game...

You could leave __init__ as I have defined it so that it cannot be called. Take what you would have wanted to put in __init__ in a new function _init: lass MyClass(): def __init__(self): ...

I do need to use __init__ internally however, so I do need to parse the error with a kwarg as in the other answers.

Verified that it creates a new class each time: def init_from(c): class MyClass: def __init__(self, a, b): self._a = a self._b = b return MyClass(c-3, c+3) x1 =...

Doesn't this create a new version of the MyClass class every time you call init_from?

The other answers are probably the best pythonic practice. but if you really want to enforce the caller, you can try using the inspect feature to verify the caller's stack frame: #!/usr/bin/env ...

You can hide the whole class inside a factory function: def init_from(c): class MyClass(): a = None b = None def __init__(self, a, b): self.a = a ...

You cannot prevent someone from calling obj = MyClass(), but you can raise an exception if somebody does. You can by pass calling the __init__ method as follows: class MyClass(): def __init__(self)...

you can only disable it by passing False as keyword argument and and True keyword argument in your @classmethod definition class MyClass: def __init__(self, value, _from_factory=False): # ...

__init__ always exists and you can't hide it. What I'd do is add a kwarg __private, which defaults to false throws an exception if it's false. Within your own classes factory methods, you then just ...

It might be a personal preference, but I find this structure easier to understand and modify. You can assign an integer to each test, depending on the method name, class name, or file name. The tests ...

Yes, there is a small difference. class Days(days: AnyVal): val n: AnyVal = days days is just a constructor parameter. You manually define n as a fields. Only n is accessible from outside. class ...

Initialize your list Perhaps you neglected to establish an empty list to hold your destinations. In this example, we use new ArrayList<>() to establish a new empty list on the same line where we ...

Array list is part of the java.util package and implements the List interface. The difference between a built-in array and an ArrayList in Java, is that the size of an array cannot be modified (if you ...