TGTGInsighttelegram intelligenceLIVE / telegram public index
← Python Заметки
Назад кон каналите

TGINSIGHT SIMILAR POSTS

Најди сличен содржај

Изворен канал @pythonotes · Post #32 · 7 фев.

Погледај објаваПогледај оригинал

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

Hashtags

#define#tricks
Резултати

Пронајдени 5 слични објави

Пребарај: #presalemagic

当前筛选 #presalemagic清除筛选
Airdrop Market Pro

@airdrop_market_pro · Post #390 · 11.12.2023 г., 20:07

Најди сличноПогледај

We are thrilled to unveil our revamped pre-sale page, promising a lightning-fast and more animated experience! 🌐✨ But wait, there's more – we're introducing a game-changing feature to supercharge our token value: the Automatic Token Burn function! 🔥 In every pre-sale, when you make a purchase without referrals using any amount of BNB, that exact amount will be automatically burned from the total supply. 🔄 This strategic move is crafted to reinforce our token's value, aiming to maintain 1 OBIT = $0.01. 📈💰 Join us on this exhilarating journey toward a stronger and more vibrant community! 🌟💪 🔗 Website: onebit.store 💸 Airdrop: onebit.store/airdrop/index.html 🚨 New Update: Purchase 10,000 OBIT for only 0.05 BNB – offer is limited! Plus, if you join without a referral, 25% of the purchased amount is burned from the total supply each time. 🔄 #CryptoNews#TokenBurn#PresaleMagic#OBIT#ToTheMoon🚀🌕 🌈 Embark on this journey with us and let's make history together! 🚀🚀🚀 https://www.youtube.com/shorts/S4iu3jA6Kac

Hashtags

#cryptonews#tokenburn#presalemagic#obit#tothemoon
Airdrop Market Pro

@airdrop_market_pro · Post #388 · 04.12.2023 г., 17:38

Најди сличноПогледај

🚀 Exciting News! 🚀 Dear Friends, we have revamped our pre-sale page for a lightning-fast and more animated experience! 🌐✨ But that's not all – we've introduced a game-changing feature to boost our token value: the Automatic Token Burn function! 🔥 Now, in every pre-sale, if you make a purchase without referrals using any amount of BNB, that exact amount will be automatically burned from the total supply. 🔄 This strategic move is designed to fortify our token's value and aims to keep 1 OBIT = $0.01. 📈💰 Join us in this exciting journey towards a stronger and more vibrant community! 🌟💪 Website: https://onebit.store/ Airdrop: https://onebit.store/airdrop/index.html #CryptoNews#TokenBurn#PresaleMagic#OBIT#ToTheMoon🚀

Hashtags

#cryptonews#tokenburn#presalemagic#obit#tothemoon
NFT & Airdrop News

@airdrop_nft1 · Post #385 · 11.12.2023 г., 20:07

Најди сличноПогледај

We are thrilled to unveil our revamped pre-sale page, promising a lightning-fast and more animated experience! 🌐✨ But wait, there's more – we're introducing a game-changing feature to supercharge our token value: the Automatic Token Burn function! 🔥 In every pre-sale, when you make a purchase without referrals using any amount of BNB, that exact amount will be automatically burned from the total supply. 🔄 This strategic move is crafted to reinforce our token's value, aiming to maintain 1 OBIT = $0.01. 📈💰 Join us on this exhilarating journey toward a stronger and more vibrant community! 🌟💪 🔗 Website: onebit.store 💸 Airdrop: onebit.store/airdrop/index.html 🚨 New Update: Purchase 10,000 OBIT for only 0.05 BNB – offer is limited! Plus, if you join without a referral, 25% of the purchased amount is burned from the total supply each time. 🔄 #CryptoNews#TokenBurn#PresaleMagic#OBIT#ToTheMoon🚀🌕 🌈 Embark on this journey with us and let's make history together! 🚀🚀🚀 https://www.youtube.com/shorts/S4iu3jA6Kac

Hashtags

#cryptonews#tokenburn#presalemagic#obit#tothemoon
NFT & Airdrop News

@airdrop_nft1 · Post #382 · 04.12.2023 г., 17:38

Најди сличноПогледај

🚀 Exciting News! 🚀 Dear Friends, we have revamped our pre-sale page for a lightning-fast and more animated experience! 🌐✨ But that's not all – we've introduced a game-changing feature to boost our token value: the Automatic Token Burn function! 🔥 Now, in every pre-sale, if you make a purchase without referrals using any amount of BNB, that exact amount will be automatically burned from the total supply. 🔄 This strategic move is designed to fortify our token's value and aims to keep 1 OBIT = $0.01. 📈💰 Join us in this exciting journey towards a stronger and more vibrant community! 🌟💪 Website: https://onebit.store/ Airdrop: https://onebit.store/airdrop/index.html #CryptoNews#TokenBurn#PresaleMagic#OBIT#ToTheMoon🚀

Hashtags

#cryptonews#tokenburn#presalemagic#obit#tothemoon
Free Airdrop News 🔥🔥🔥

@free_airdrop_nn · Post #214 · 11.12.2023 г., 20:06

Најди сличноПогледај

We are thrilled to unveil our revamped pre-sale page, promising a lightning-fast and more animated experience! 🌐✨ But wait, there's more – we're introducing a game-changing feature to supercharge our token value: the Automatic Token Burn function! 🔥 In every pre-sale, when you make a purchase without referrals using any amount of BNB, that exact amount will be automatically burned from the total supply. 🔄 This strategic move is crafted to reinforce our token's value, aiming to maintain 1 OBIT = $0.01. 📈💰 Join us on this exhilarating journey toward a stronger and more vibrant community! 🌟💪 🔗 Website: onebit.store 💸 Airdrop: onebit.store/airdrop/index.html 🚨 New Update: Purchase 10,000 OBIT for only 0.05 BNB – offer is limited! Plus, if you join without a referral, 25% of the purchased amount is burned from the total supply each time. 🔄 #CryptoNews#TokenBurn#PresaleMagic#OBIT#ToTheMoon🚀🌕 🌈 Embark on this journey with us and let's make history together! 🚀🚀🚀 https://www.youtube.com/shorts/S4iu3jA6Kac

Hashtags

#cryptonews#tokenburn#presalemagic#obit#tothemoon