Telegram Group & Telegram Channel
Что выведет этот код на Python?


def append_to(element, to=[]):
to.append(element)
return to

print(append_to(1))
print(append_to(2))
print(append_to(3, []))
print(append_to(4))


🔢 Варианты ответа:

A)

[2]
[3]
[4]


B)

[1, 2]
[3]
[1, 2, 4]


C)

[1, 2]
[1, 2, 3]
[1, 2, 3, 4]


D)

[1, 2]
[3]
[4]


Правильный ответ: B

💡 Почему?

В Python дефолтные аргументы вычисляются один раз — при определении функции.
Список
to=[] сохраняется и используется повторно, если явно не передан другой.
Поэтому
append_to(1), append_to(2) и append_to(4) работают с одним и тем же списком.



tg-me.com/python_job_interview/1070
Create:
Last Update:

Что выведет этот код на Python?


def append_to(element, to=[]):
to.append(element)
return to

print(append_to(1))
print(append_to(2))
print(append_to(3, []))
print(append_to(4))


🔢 Варианты ответа:

A)

[2]
[3]
[4]


B)

[1, 2]
[3]
[1, 2, 4]


C)

[1, 2]
[1, 2, 3]
[1, 2, 3, 4]


D)

[1, 2]
[3]
[4]


Правильный ответ: B

💡 Почему?

В Python дефолтные аргументы вычисляются один раз — при определении функции.
Список
to=[] сохраняется и используется повторно, если явно не передан другой.
Поэтому
append_to(1), append_to(2) и append_to(4) работают с одним и тем же списком.

BY Python вопросы с собеседований


Warning: Undefined variable $i in /var/www/tg-me/post.php on line 283

Share with your friend now:
tg-me.com/python_job_interview/1070

View MORE
Open in Telegram


telegram Telegram | DID YOU KNOW?

Date: |

Why Telegram?

Telegram has no known backdoors and, even though it is come in for criticism for using proprietary encryption methods instead of open-source ones, those have yet to be compromised. While no messaging app can guarantee a 100% impermeable defense against determined attackers, Telegram is vulnerabilities are few and either theoretical or based on spoof files fooling users into actively enabling an attack.

What is Telegram?

Telegram’s stand out feature is its encryption scheme that keeps messages and media secure in transit. The scheme is known as MTProto and is based on 256-bit AES encryption, RSA encryption, and Diffie-Hellman key exchange. The result of this complicated and technical-sounding jargon? A messaging service that claims to keep your data safe.Why do we say claims? When dealing with security, you always want to leave room for scrutiny, and a few cryptography experts have criticized the system. Overall, any level of encryption is better than none, but a level of discretion should always be observed with any online connected system, even Telegram.

telegram from cn


Telegram Python вопросы с собеседований
FROM USA