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🐍 7 “бесполезных” функций Python, которые на самом деле полезны

Инструменты из стандартной библиотеки, которые могут удивить:

1. textwrap.dedent() — удаляет отступы у многострочного текста.

import textwrap
text = textwrap.dedent(\"\"\"
Привет!
Это текст с отступами.
\"\"\").strip()
print(text)


2. difflib.get_close_matches() — находит похожие строки.

import difflib
words = ["python", "java", "javascript"]
print(difflib.get_close_matches("javascrip", words))


3. uuid.uuid4() — генерирует уникальный ID.

import uuid
print(uuid.uuid4())


4. shutil.get_terminal_size() — узнаёт размеры терминала.

import shutil
columns, rows = shutil.get_terminal_size()
print(f"Размер терминала: {columns}x{rows}")


5. functools.lru_cache() — кэширует результаты функции.

from functools import lru_cache
@lru_cache(maxsize=None)
def fib(n):
if n < 2:
return n
return fib(n-1) fib(n-2)
print(fib(100))


6. itertools.groupby() — группирует элементы по ключу.

from itertools import groupby
data = [('fruit', 'apple'), ('fruit', 'banana'), ('veg', 'carrot')]
for key, group in groupby(data, lambda x: x[0]):
print(key, list(group))


7. contextlib.suppress() — элегантная альтернатива try-except.

from contextlib import suppress
with suppress(FileNotFoundError):
open("not_exist.txt")


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🐍 7 “бесполезных” функций Python, которые на самом деле полезны

Инструменты из стандартной библиотеки, которые могут удивить:

1. textwrap.dedent() — удаляет отступы у многострочного текста.


import textwrap
text = textwrap.dedent(\"\"\"
Привет!
Это текст с отступами.
\"\"\").strip()
print(text)


2. difflib.get_close_matches() — находит похожие строки.

import difflib
words = ["python", "java", "javascript"]
print(difflib.get_close_matches("javascrip", words))


3. uuid.uuid4() — генерирует уникальный ID.

import uuid
print(uuid.uuid4())


4. shutil.get_terminal_size() — узнаёт размеры терминала.

import shutil
columns, rows = shutil.get_terminal_size()
print(f"Размер терминала: {columns}x{rows}")


5. functools.lru_cache() — кэширует результаты функции.

from functools import lru_cache
@lru_cache(maxsize=None)
def fib(n):
if n < 2:
return n
return fib(n-1) fib(n-2)
print(fib(100))


6. itertools.groupby() — группирует элементы по ключу.

from itertools import groupby
data = [('fruit', 'apple'), ('fruit', 'banana'), ('veg', 'carrot')]
for key, group in groupby(data, lambda x: x[0]):
print(key, list(group))


7. contextlib.suppress() — элегантная альтернатива try-except.

from contextlib import suppress
with suppress(FileNotFoundError):
open("not_exist.txt")


@pythonl

BY Python/ django


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Telegram announces Anonymous Admins

The cloud-based messaging platform is also adding Anonymous Group Admins feature. As per Telegram, this feature is being introduced for safer protests. As per the Telegram blog post, users can “Toggle Remain Anonymous in Admin rights to enable Batman mode. The anonymized admin will be hidden in the list of group members, and their messages in the chat will be signed with the group name, similar to channel posts.”

Should You Buy Bitcoin?

In general, many financial experts support their clients’ desire to buy cryptocurrency, but they don’t recommend it unless clients express interest. “The biggest concern for us is if someone wants to invest in crypto and the investment they choose doesn’t do well, and then all of a sudden they can’t send their kids to college,” says Ian Harvey, a certified financial planner (CFP) in New York City. “Then it wasn’t worth the risk.” The speculative nature of cryptocurrency leads some planners to recommend it for clients’ “side” investments. “Some call it a Vegas account,” says Scott Hammel, a CFP in Dallas. “Let’s keep this away from our real long-term perspective, make sure it doesn’t become too large a portion of your portfolio.” In a very real sense, Bitcoin is like a single stock, and advisors wouldn’t recommend putting a sizable part of your portfolio into any one company. At most, planners suggest putting no more than 1% to 10% into Bitcoin if you’re passionate about it. “If it was one stock, you would never allocate any significant portion of your portfolio to it,” Hammel says.

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