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🐍 Π—Π°Π΄Π°Ρ‡Π° ΠΏΠΎ Python: Замыкания ΠΈ области видимости

Π§Ρ‚ΠΎ Π²Ρ‹Π²Π΅Π΄Π΅Ρ‚ ΡΠ»Π΅Π΄ΡƒΡŽΡ‰ΠΈΠΉ ΠΊΠΎΠ΄?


def outer():
x = 5
def inner():
nonlocal x
x += 1
return x
return inner

f = outer()
print(f())
print(f())
print(f())


Π’Π°Ρ€ΠΈΠ°Π½Ρ‚Ρ‹ ΠΎΡ‚Π²Π΅Ρ‚Π°:
A)

7
8


B)

5
5


C)

6
6


D) Ошибка выполнСния

---

βœ… ΠŸΡ€Π°Π²ΠΈΠ»ΡŒΠ½Ρ‹ΠΉ ΠΎΡ‚Π²Π΅Ρ‚: A

ΠŸΠΎΡ‡Π΅ΠΌΡƒ:
Ѐункция
outer создаёт Π·Π°ΠΌΡ‹ΠΊΠ°Π½ΠΈΠ΅. ΠŸΠ΅Ρ€Π΅ΠΌΠ΅Π½Π½Π°Ρ x сохраняСтся ΠΌΠ΅ΠΆΠ΄Ρƒ Π²Ρ‹Π·ΠΎΠ²Π°ΠΌΠΈ f, ΠΏΠΎΡ‚ΠΎΠΌΡƒ Ρ‡Ρ‚ΠΎ inner β€” Π·Π°ΠΌΡ‹ΠΊΠ°Π΅Ρ‚ x ΠΈ измСняСт Π΅Ρ‘ с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ nonlocal. Π­Ρ‚ΠΎ классичСский ΠΏΡ€ΠΈΠΌΠ΅Ρ€ использования Π·Π°ΠΌΡ‹ΠΊΠ°Π½ΠΈΠΉ Π² Python.

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🐍 Π—Π°Π΄Π°Ρ‡Π° ΠΏΠΎ Python: Замыкания ΠΈ области видимости

Π§Ρ‚ΠΎ Π²Ρ‹Π²Π΅Π΄Π΅Ρ‚ ΡΠ»Π΅Π΄ΡƒΡŽΡ‰ΠΈΠΉ ΠΊΠΎΠ΄?


def outer():
x = 5
def inner():
nonlocal x
x += 1
return x
return inner

f = outer()
print(f())
print(f())
print(f())


Π’Π°Ρ€ΠΈΠ°Π½Ρ‚Ρ‹ ΠΎΡ‚Π²Π΅Ρ‚Π°:
A)

7
8


B)

5
5


C)

6
6


D) Ошибка выполнСния

---

βœ… ΠŸΡ€Π°Π²ΠΈΠ»ΡŒΠ½Ρ‹ΠΉ ΠΎΡ‚Π²Π΅Ρ‚: A

ΠŸΠΎΡ‡Π΅ΠΌΡƒ:
Ѐункция
outer создаёт Π·Π°ΠΌΡ‹ΠΊΠ°Π½ΠΈΠ΅. ΠŸΠ΅Ρ€Π΅ΠΌΠ΅Π½Π½Π°Ρ x сохраняСтся ΠΌΠ΅ΠΆΠ΄Ρƒ Π²Ρ‹Π·ΠΎΠ²Π°ΠΌΠΈ f, ΠΏΠΎΡ‚ΠΎΠΌΡƒ Ρ‡Ρ‚ΠΎ inner β€” Π·Π°ΠΌΡ‹ΠΊΠ°Π΅Ρ‚ x ΠΈ измСняСт Π΅Ρ‘ с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ nonlocal. Π­Ρ‚ΠΎ классичСский ΠΏΡ€ΠΈΠΌΠ΅Ρ€ использования Π·Π°ΠΌΡ‹ΠΊΠ°Π½ΠΈΠΉ Π² Python.

@pythonl

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Telegram Gives Up On Crypto Blockchain Project

Durov said on his Telegram channel today that the two and a half year blockchain and crypto project has been put to sleep. Ironically, after leaving Russia because the government wanted his encryption keys to his social media firm, Durov’s cryptocurrency idea lost steam because of a U.S. court. β€œThe technology we created allowed for an open, free, decentralized exchange of value and ideas. TON had the potential to revolutionize how people store and transfer funds and information,” he wrote on his channel. β€œUnfortunately, a U.S. court stopped TON from happening.”

Should I buy bitcoin?

β€œTo the extent it is used I fear it’s often for illicit finance. It’s an extremely inefficient way of conducting transactions, and the amount of energy that’s consumed in processing those transactions is staggering,” the former Fed chairwoman said. Yellen’s comments have been cited as a reason for bitcoin’s recent losses. However, Yellen’s assessment of bitcoin as a inefficient medium of exchange is an important point and one that has already been raised in the past by bitcoin bulls. Using a volatile asset in exchange for goods and services makes little sense if the asset can tumble 10% in a day, or surge 80% over the course of a two months as bitcoin has done in 2021, critics argue. To put a finer point on it, over the past 12 months bitcoin has registered 8 corrections, defined as a decline from a recent peak of at least 10% but not more than 20%, and two bear markets, which are defined as falls of 20% or more, according to Dow Jones Market Data.

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