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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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@starvetbooks · Post #4932 · 07.02.2025 г., 15:17

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COCCIDIOSIS Coccidiosis is a deadly disease that hampers chicken's productivity and welfare. Thus, the disease is a major menace to the global poultry industry. Coccidiosis which is caused by the apicomplexan parasite of the genus Eimeria has seven known species which affect the different parts of the intestinal tract of chickens #SIGNS Common signs in infected flocks include *reduced feed consumption, * rapid weight loss, * droopiness * ruffled feathers, * severe diarrhea. * Wet droppings with mucus * Clinical infections are seldom seen in poults >8 wk old. Morbidity and mortality may be high #TREATMENT The most popular treatment for coccidiosis is #Amprolium, which blocks the parasite's ability to uptake and multiply. Treatment is usually administered by adding Amprolium to the chickens' water supply, however in some cases, where sick chickens aren't eating or drinking enough, the medication is given orally. https://t.me/starvetbooks

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@dzdigital3 · Post #19170 · 16.10.2025 г., 20:01

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Robot Glove Cerebral Infarction Training Device Finger Hand Function Workout Buy link GET IT BY ALIEXPRESS 👇 https://s.click.aliexpress.com/e/_EGCqkNG GET IT BY AMAZON 👇 https://amzn.to/4jS5t8A GET IT BY TEMU 👇 https://app.temu.com/m/nz8nyq69zbu #massage#health #treatment#treatmomright#healthtips

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@dzdigital3 · Post #18896 · 20.08.2025 г., 18:22

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@dzdigital3 · Post #18603 · 16.07.2025 г., 12:30

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@dzdigital3 · Post #18592 · 14.07.2025 г., 20:54

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@dzdigital3 · Post #18500 · 07.07.2025 г., 12:43

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@starvetbooks · Post #5123 · 30.03.2025 г., 14:16

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Cow Calves Mites Infestation: ******* #Mite_infestations in calves are usually caused by sarcoptic mange (Sarcoptes scabiei) or chorioptic mange (Chorioptes bovis). These mites cause intense itching, hair loss, scabs, and thickened skin, especially around the head, neck, legs, and tail base. #Symptoms of Mite Infestation in Calves: Severe itching and restlessness Hair loss and crusty skin lesions Thickened, wrinkled skin Reduced weight gain due to stress and discomfort Secondary bacterial infections if untreated #Diagnosis: Skin scrapings examined under a microscope Clinical signs and response to treatment #Treatment Options: 1. Topical Treatments: Lime sulfur dips Amitraz or permethrin-based sprays Ivermectin or doramectin pour-on treatments 2. Injectable Treatments: Ivermectin (SC or oral): Effective against both Sarcoptes and Chorioptes Doramectin or Moxidectin 3. Environmental Control: Clean and disinfect calf pens Avoid overcrowding Treat all animals in the herd to prevent re-infestation #Prevention: Regular parasite control programs Monitoring new animals for signs of mites Ensuring good nutrition and overall calf health https://t.me/starvetbooks

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@starvetbooks · Post #4519 · 31.08.2024 г., 04:27

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‘Heart Water’ Disease: ******* Heart water also known as 1. Cowdriosis 2. Nintas 3. Ehrlichiosis. Heart water is a ricketsial disease of ruminats and some wild animals include cattle sheep and goats ans deer in domestic animals the incubation period varies because of dependent of their rout infection and age. ...................#Etiology.................... its a tick born rickettsial diseases caused by Ehrilichia ruminantum (foremaly known as cowdaria ruminuntum) its transmitted by tick genus of Ambylomma #NB cowdariosis is a notifiable disease. .................#Clinical#Sign.................. 1. Neurological signs. * Tremor * head pressing 2. Respiratory signs. * Cough *Nasal discharge. 3. Systemic sign. * Fever * Loss of appetite. 4. Physical examination. * petechiae of mucos membrane. * Tachycardia * Muffled heart sound 5. Very hard kicking 6. Oedema and diarrhoea. ...................#Diagnosis....................... #Post-#Mortum#Examination. 1. a light yellow transudate found * Thorax * Abdomen * Pericardium. 2. Pulmonary oedema 3. Most fetal cases is * Hydropericardium 4. Difinetly diagnosis you have to focus. * Hippocampus (Under gemsa stain ) or histopathology .......#Differential#Diseases.( look like )....... 1. Toxic plant 2. Tetanus ( just look for wound ) 3. Listeriosis. 4. Milk fever (but remeber its depends muturation during or after parturaion) 5. Mineral deficiency 6. And more others related muscles. ..............#Control. (Vector control )................. (Amblyomma hebraeum) 1. Ectoparasiticide control tick those cause diseases specially thse species * Boophilus * Hyalomma .................#Vaccination (young once )............. 1. a live blood vaccine ......................#Treatment......................... during early stage you can use 1. Sulfonamide 2. Tetracycline https://t.me/starvetbooks

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