The dictionary contains copy

---

examples/functions/dict_is_a_copy.py

def f(**kw):
    print(kw)
    kw['a'] = 7
    print(kw)

z = 23
f(a=10, b=12)
f(a=z, y=99, z=1)
print(z)

{'a': 10, 'b': 12}
{'a': 7, 'b': 12}
{'a': 23, 'y': 99, 'z': 1}
{'a': 7, 'y': 99, 'z': 1}
23