injector.py

from injector import Injector, Key, inject

Sizes = Key('sizes')
Names = Key('names')
  
class A:
    @inject
    def __init__(self, number: int, names: Names, sizes: Sizes):
        print("init A", [number, names, sizes])
        self.number = number 
        self.names = names
        self.sizes = sizes
  
    def __str__(self):
        return f"A<{self.number}, {self.names}, {self.sizes}>"


def configure(binder):
   binder.bind(A)
   binder.bind(int, to=123)
   binder.bind(Names, to='Bob')
   binder.bind(Sizes, to=[1, 2, 3])

a = Injector(configure).get(A)
# [123, 'Bob', [1, 2, 3]]
print(a)