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

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

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Пронајдени 18 слични објави

Пребарај: #iskijhalaksabsealag

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VISION11

@vision11official · Post #1218 · 17.05.2023 г., 06:56

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By following these steps, you will successfully join the contest. Good luck! 1. Make your Reel with your original Hookstep. 2. Use the audio "Iski Jhalak Sabse Alag - Anthem '23." 3. Tag @vision11official in your Reel. 4. Use the following hashtags: #Iskijhalaksabsealag & #vision11 5. Make sure to follow the Vision11 Instagram Page. . Terms & Condition -Entry closes on 26th May at 11:59 PM (IST | GMT +5:30). -The reel should be a minimum of 30 seconds. -Entries with the audio "Iski Jhalak Sabse Alag - Anthem '23" within the specified timeframe will be considered as Vision11's property and may be used at its convenience. -The winner will be announced on 28th May in the evening slot. -The winner must confirm their identity and association with the username. -The reward will be shipped to the winner after the Indian T-20 League Final Match. -The winner will be declared based on cumulative parameters, including Best Outfit, Best Hook, and Reel Engagement Score. -In all matters related to this contest, the decision of Vision11 shall be final and binding Instagram Audio Link: https://www.instagram.com/reel/CsVWxnYgMjP/?igshid=MzRlODBiNWFlZA==

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#iskijhalaksabsealag #vision11

VISION11

@vision11official · Post #1211 · 08.05.2023 г., 12:58

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Agar ho sahi 'Vision' toh zaroor banoge 'Champion'!!👑 Prithvi ki suno aur #Vision11 pe khelo...kyuki iski jhalak sabse alag! 🔥🔥 Download #Vision11 app now! 📲 https://vision11.in/APK/vision11.apk #SapnokaVision#iskijhalaksabsealag

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#vision11 #sapnokavision #iskijhalaksabsealag

VISION11

@vision11official · Post #1206 · 27.04.2023 г., 09:59

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Teams zyada = Maximum fayda! 🔥💯 Indian T20 League ka asli maza lo with 3⃣0⃣ teams per user only on #Vision11! 💪 Toh kya soch rhe ho...bas team banao aur cash jeeto #Vision11 pe kyuki iski jhalak sabse alag! 💰💸 https://vision11.in/APK/vision11.apk #SapnokaVision#iskijhalaksabsealag

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#vision11 #sapnokavision #iskijhalaksabsealag

VISION11

@vision11official · Post #1205 · 24.04.2023 г., 11:30

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#Vision11 pe milega unlimited option...toh rok nai paoge khelne ka temptation! 😉 Bas maze lo aur jeeto cash with #SapnoKaVision! 💸 Iski jhalak, sabse alag... Download #Vision11 now! 💪 https://vision11.in/APK/vision11.apk #IskiJhalakSabseAlag

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#vision11 #sapnokavision #iskijhalaksabsealag

VISION11

@vision11official · Post #1192 · 08.04.2023 г., 17:55

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Jaddu 3 wickets🔥, what a win by CSK. Download Vision11 App Now, Get 500rs signup bonus. Create your team now https://vision11.in/APK/vision11.apk #IskiJhalakSabseAlag#JadejaKiJhalakSabseAlag

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#iskijhalaksabsealag #jadejakijhalaksabsealag

VISION11

@vision11official · Post #1194 · 12.04.2023 г., 18:25

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Thala aaye Chepauk mein aur jalwa na dikhaye! Aisa kabhi hua hai kya?! Dhoni ke jhalak hamesha sabse alag! Let's cheer up the team together with #Vision11 https://vision11.in/APK/vision11.apk . . #IskiJhalakSabseAlag#dhoniKiJhalakSabseAlag

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#vision11 #iskijhalaksabsealag #dhonikijhalaksabsealag

VISION11

@vision11official · Post #1231 · 15.06.2023 г., 15:36

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#Vision11 = Maximum rewards & highest returns!! 💪🔥 Get the best returns on investment ka heaven #Vision11! 💯 Download #Vision11 now! 📲#IskiJhalakSabseAlag https://vision11.in/APK/vision11.apk #vision11#vision11official#iskijhalaksabsealag#SapnoKaVision

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#vision11 #iskijhalaksabsealag #vision11official #sapnokavision

VISION11

@vision11official · Post #1229 · 09.06.2023 г., 12:08

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#vision11 #iskijhalaksabsealag #vision11official #sapnokavision

VISION11

@vision11official · Post #1220 · 25.05.2023 г., 14:01

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Jab #Vision11 pe jeet hogi wonderful, tab khayal aayenge colourful! 😉 Play your hearts out & get exclusive winnings on #Vision11 ...kyuki Iski Jhalak Sabse Alag! 💪💯 Download #Vision11 now! 📲 https://vision11.in/APK/vision11.apk . . . #vision11#sapnokavision#vision11official#iskijhalaksabsealag

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#vision11 #sapnokavision #vision11official #iskijhalaksabsealag

VISION11

@vision11official · Post #1217 · 16.05.2023 г., 14:31

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🚨 Breaking News: Ab aap bhi ban sakte hai 'Crorepati' bas #Vision11 pe! Khelo #Vision11 pe har roz aur jeeto in Crores...kyuki iski jhalak sabse alag!! 💯💰 Download #Vision11 now! 📲 https://vision11.in/APK/vision11.apk #SapnoKaVision#Vision11#Vision11Official#Iskijhalaksabsealag

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#vision11 #sapnokavision #vision11official #iskijhalaksabsealag

VISION11

@vision11official · Post #1225 · 30.05.2023 г., 16:28

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🚨Announcement 🚨 Congratulations to the winners of "Indian T20 League Leaderboard" 🎉🎉 We Hope you enjoyed playing it loud on #Vision11💪🏻 App bhi ban sakte hain inki tarah Leaderboard ka champion Bas kheliye #Vision11 app par aur Win it Proud https://vision11.in/APK/vision11.apk . . . #Vision11#Vision11official#iskijhalaksabsealag#sapnokavision11

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#vision11 #vision11official #iskijhalaksabsealag #sapnokavision11

VISION11

@vision11official · Post #1197 · 15.04.2023 г., 12:53

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Kursi ki peti baandh lijiye mausam bigadne wala hai, Fantasy Apps ka Pathaan is here! Download the #Vision11 App & make your team now. #IskiJhalakSabseAlag#Vision11#Csk#Pathaan

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#vision11 #iskijhalaksabsealag #csk #pathaan

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