[Python Core] Keyword for direct passthrough of **kwargs to super().__init__

[buran]

well, *args is catch all for positional arguments, **kwargs - for keyword (named) argument, so there is no way to have one more catch-all-pass-trough. You would do something like

class Animal:
    def __init__(self, **kwargs):
        self.species = kwargs.get('species', None)
class Mouse(Animal):
    def __init__(self, **kwargs):
        self.name = kwargs.get('name', None)
        super().__init__(**kwargs)

mouse = Mouse(species="Mouse", name='Mikey Mouse')
print(mouse.species)
print(mouse.name)

or if you want to have some explicit mentioned arguments

class Animal:
    def __init__(self, species, **kwargs):
        self.species = species
class Mouse(Animal):
    def __init__(self, name, **kwargs):
        self.name = name
        super().__init__(**kwargs)

mouse = Mouse(species="Mouse", name='Mikey Mouse')
print(mouse.species)
print(mouse.name)

in both cases output is
Mouse
Mikey Mouse

the second example assume the parent class has no argument name