1def f1(**kwargs): 2 print(kwargs) 3 4f1() 5f1(a=1) 6 7def f2(a, **kwargs): 8 print(a, kwargs) 9 10f2(1) 11f2(1, b=2) 12 13def f3(a, *vargs, **kwargs): 14 print(a, vargs, kwargs) 15 16f3(1) 17f3(1, 2) 18f3(1, b=2) 19f3(1, 2, b=3) 20 21def f4(*vargs, **kwargs): 22 print(vargs, kwargs) 23f4(*(1, 2)) 24f4(kw_arg=3) 25f4(*(1, 2), kw_arg=3) 26