Yurii Karabas <[email protected]> added the comment:
Thanks, for the replies, didn't know about that.
Interesting thing that `collections.abc.Set` base class has implementations of
`__and__`, `__or__`, `__sub__` and `__xor__` methods, it also provide
`_from_iterable` class method that is used to create `Set` instance from
iterable (all of those operators use this method).
```
class Set(Collection):
...
@classmethod
def _from_iterable(cls, it):
'''Construct an instance of the class from any iterable input.
Must override this method if the class constructor signature
does not accept an iterable for an input.
'''
return cls(it)
```
Basically, my proposition was to do smth similar to `collections.abc.Mapping`,
but I understand your motivation not to implement this feature.
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<https://bugs.python.org/issue42841>
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