Скорее всего уже слышали, что складывать строки через + это плохая практика. Падение производительности, и всё такое. Без лишних слов, давайте измерять:
from timeit import timeit
def t1():
# складываем 10 строк через + из переменной
t = 'text'
for _ in range(1000):
s = t + t + t + t + t + t + t + t + t
def t2():
# склеиваем список строк через метод join
arr = ['text'] * 10
for _ in range(1000):
s = ''.join(arr)
def t3():
# складываем через + но не из переменной а непосредственно инлайн объекты
for _ in range(1000):
s = 'text' + 'text' + 'text' + ... # всего 10 раз
Теперь каждую строку склейки запустим по 10М раз
>>> timeit(t1, number=10000)
0.21951690399964718
>>> timeit(t2, number=10000)
1.4978306379998685
>>> timeit(t3, number=10000)
0.2213820789993406
Хм, а нам говорили что через "+" это плохо и медленно ))) 😁
Тут стоит учитывать, что речь идёт о склейке множества длинных строк.
Давайте изменим условия:
def t4():
t = 'text'*100
for _ in range(1000):
s = t + t + t + t + t + t + t + t + t
def t5():
arr = ['text'*100] * 10
for _ in range(1000):
s = ''.join(arr)
def t6():
for _ in range(1000):
s = 'text'*100 + 'text'*100 + ... # всего 10 раз
>>> timeit(t4, number=10000)
12.795130728000004
>>> timeit(t5, number=10000)
2.642637542999182
>>> timeit(t6, number=10000)
0.2184546610005782
Вот, уже другой разговор, сразу видна разница, в среднем в 6 раз. Но погодите, почему последний тест t6() по скорости такой же как и t3()? Ведь строки теперь в 100 раз длиннее!
Это вопросы оптимизации кода, какие простые изменения ускоряют или замедляют выполнение программы. Мы столкнулись с примером обхода обращения к переменной. Например, именно так работает директива #define в С++, во время компиляции подставляя значение переменной вместо ссылки на неё.
В Python это тоже работает, но часто ли вы сможете встретить такой способ работы со строками? К сожалению, способ почти только теоретический.
В целом, тесты показали то, что мы хотели. Делаем выводы самостоятельно.
Полный листинг 🌍
#tricks
Keep Android Open
https://keepandroidopen.org
https://f-droid.org/2026/02/20/twif.html
During out talks with F-Droid users at FOSDEM26 we were baffled to learn most were relieved that #Google has canceled their plans to lock-down #Android.
Why baffled? Because no such thing actually happened, the plans announced last August are still scheduled to take place. We see a battle of PR campaigns and whomever has the last post out remains in the media memory as the truth, and having journalists just copy/paste Google posts serves no one.
But Google said… Said what? That there’s a magical “advanced flow”? Did you see it? Did anyone experience it? When is it scheduled to be released? Was it part of Android 16 QPR2 in December? Of 16 QPR3 Beta 2.1 last week? Of Android 17 Beta 1? No? That’s the issue… As time marches on people were left with the impression that everything was done, fixed, Google “wasn’t evil” after all, this time, yay!
While we all have bad memories of “banners” as the dreaded ad delivery medium of the Internet, after FOSDEM we decided that we have to raise the issue back and have everyone, who cares about Android as an open platform, informed that we are running out of time until Google becomes the gate-keeper of all users devices.
Hence, the website and starting today our clients, with the updates of F-Droid and F-Droid Basic, feature a banner that reminds everyone how little time we have and how to voice their concerns to whatever local authority is able to understand the dangers of this path Android is led to.
We are not alone in our fight, IzzyOnDroid added a banner too, more #FDroid clients will add the warning banner soon and other app downloaders, like Obtainium, already have an in-app warning dialogue.
#why
Keep Android Open
https://keepandroidopen.org
https://f-droid.org/2026/02/20/twif.html
During out talks with F-Droid users at FOSDEM26 we were baffled to learn most were relieved that #Google has canceled their plans to lock-down #Android.
Why baffled? Because no such thing actually happened, the plans announced last August are still scheduled to take place. We see a battle of PR campaigns and whomever has the last post out remains in the media memory as the truth, and having journalists just copy/paste Google posts serves no one.
But Google said… Said what? That there’s a magical “advanced flow”? Did you see it? Did anyone experience it? When is it scheduled to be released? Was it part of Android 16 QPR2 in December? Of 16 QPR3 Beta 2.1 last week? Of Android 17 Beta 1? No? That’s the issue… As time marches on people were left with the impression that everything was done, fixed, Google “wasn’t evil” after all, this time, yay!
While we all have bad memories of “banners” as the dreaded ad delivery medium of the Internet, after FOSDEM we decided that we have to raise the issue back and have everyone, who cares about Android as an open platform, informed that we are running out of time until Google becomes the gate-keeper of all users devices.
Hence, the website and starting today our clients, with the updates of F-Droid and F-Droid Basic, feature a banner that reminds everyone how little time we have and how to voice their concerns to whatever local authority is able to understand the dangers of this path Android is led to.
We are not alone in our fight, IzzyOnDroid added a banner too, more #FDroid clients will add the warning banner soon and other app downloaders, like Obtainium, already have an in-app warning dialogue.
#why
Super Bowl Ad TRICKING You Into Welcoming Surveillance State!
During the Super Bowl, you may have seen a commercial for #Amazon’s #Ring “Search Party” feature, which uses an emotional lost-dog story to encourage adoption of participation in what amounts to a widespread neighborhood #surveillance net. Jimmy points out that the ad masks #privacy risks tied to AI-driven #cameras, data sharing, and Amazon’s broader surveillance ecosystem, including concerns about opt-out defaults and government access.
He and Americans’ Comedian Kurt Metzger expand the discussion into a broader critique of social media and smart devices as tools of self-surveillance, suggesting public safety and convenience are being used to justify constant monitoring. Ultimately, it frames the commercial as emblematic of a growing surveillance state presented as benevolent technology.
https://www.youtube.com/watch?v=5AJtRDjoXN4
#why
SharedTrace
#Python tool for getting additional info by shared link (usernames, avatars, IDs etc).
Support TikTok, Instagram, Discord, ChatGPT, Perplexity and other platforms.
https://github.com/hondling/sharetrace
@cybdetective
#socmint#tracking#trackers#stalking#surveillance#why