>>> def f(**kwargs):
...     return kwargs
...
>>> f(a=1, b=2, c=3, d='a')
{'a': 1, 'b': 2, 'c': 3, 'd': 'a'}

>>> a=1
>>> f(a)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: f() takes 0 positional arguments but 1 was given

>>> def foo(a, b, c):
...   return locals()
...
>>> foo(1,2,3)
{'a': 1, 'b': 2, 'c': 3}

>>> dict(a=1, b=2)
{'a': 1, 'b': 2}