store_attr.py

import re, inspect

# Taken and modified from https://github.com/fastai/fastcore

class Base:

    def _store_attr(self, **attrs):
        for n,v in attrs.items():
            setattr(self, n, v)
            self.__stored_args__[n] = v

    def store_attr(self, names=None, but=[], **attrs):
        "Store params named in comma-separated `names` from calling context into attrs in `self`"
        fr = inspect.currentframe().f_back
        args,varargs,keyw,locs = inspect.getargvalues(fr)
        if self is None: self = locs[args[0]]
        if not hasattr(self, '__stored_args__'): self.__stored_args__ = {}
        if attrs: return self._store_attr(**attrs)

        ns = re.split(', *', names) if names else args[1:]
        self._store_attr(**{n:fr.f_locals[n] for n in ns if n not in but})
        
class T(Base):
    def __init__(self, a,b,c): 
      super().__init__()
      self.store_attr()

class T2(T):
    def __init__(self, d, **kwargs):
        super().__init__(**kwargs)
        self.store_attr()

t2 = T2(a=1,b=2,c=3,d=4)
print(t2.a)
print(t2.b)
print(t2.c)
print(t2.d)