def create_funcs(): funcs = [] for i in range(3): def f(): return i funcs.append(f) return funcs
for func in create_funcs(): print(func())
Варианты ответа: A)
1 2
B)
2 2
C)
0 0
D) Ошибка выполнения
---
✅ Правильный ответ: B
Почему: Это классическая late binding: функция f() не сохраняет значение i на момент создания, а берёт его из текущей области видимости при вызове. К моменту вызова i == 2 (последнее значение в range(3)), поэтому все три функции возвращают 2.
Чтобы избежать этого — можно использовать аргументы по умолчанию: def f(i=i): return i
def create_funcs(): funcs = [] for i in range(3): def f(): return i funcs.append(f) return funcs
for func in create_funcs(): print(func())
Варианты ответа: A)
1 2
B)
2 2
C)
0 0
D) Ошибка выполнения
---
✅ Правильный ответ: B
Почему: Это классическая late binding: функция f() не сохраняет значение i на момент создания, а берёт его из текущей области видимости при вызове. К моменту вызова i == 2 (последнее значение в range(3)), поэтому все три функции возвращают 2.
Чтобы избежать этого — можно использовать аргументы по умолчанию: def f(i=i): return i
BY Python RU
Warning: Undefined variable $i in /var/www/tg-me/post.php on line 283
Bitcoin is a decentralized digital currency that you can buy, sell and exchange directly, without an intermediary like a bank. Bitcoin’s creator, Satoshi Nakamoto, originally described the need for “an electronic payment system based on cryptographic proof instead of trust.” Each and every Bitcoin transaction that’s ever been made exists on a public ledger accessible to everyone, making transactions hard to reverse and difficult to fake. That’s by design: Core to their decentralized nature, Bitcoins aren’t backed by the government or any issuing institution, and there’s nothing to guarantee their value besides the proof baked in the heart of the system. “The reason why it’s worth money is simply because we, as people, decided it has value—same as gold,” says Anton Mozgovoy, co-founder & CEO of digital financial service company Holyheld.
That growth environment will include rising inflation and interest rates. Those upward shifts naturally accompany healthy growth periods as the demand for resources, products and services rise. Importantly, the Federal Reserve has laid out the rationale for not interfering with that natural growth transition.It's not exactly a fad, but there is a widespread willingness to pay up for a growth story. Classic fundamental analysis takes a back seat. Even negative earnings are ignored. In fact, positive earnings seem to be a limiting measure, producing the question, "Is that all you've got?" The preference is a vision of untold riches when the exciting story plays out as expected.
