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Изворен канал @pythonotes · Post #397 · 12 ное.

Использование Pydantic сегодня стало нормой, и это правильно. Но иногда на ревью вижу, что используют его не всегда корректно. Например, метод BaseModel.model_dump() по умолчанию не преобразует стандартные типы, такие как datetime, UUID или Decimal, в простой сериализуемый для JSON вид. Тогда пишут кастмоный сериализатор для этих типов чтобы функция json.dump() не падала с ошибкой. import uuid from datetime import datetime from decimal import Decimal from uuid import UUID from pydantic import BaseModel class MyModel(BaseModel): id: UUID date: datetime value: Decimal obj = MyModel( id=uuid.uuid4(), date=datetime.now(), value='1.23' ) print(obj.model_dump()) # не подходит для json.dump # { # 'id': UUID('4f8c1bc4-25fd-40cd-9dbe-2c73639b0dc1'), # 'date': datetime.datetime(2025, 12, 12, 12, 12, 12, 111111), # 'value': Decimal('1.23') # } # добавляем свой кастомный сериализатор json.dumps(obj.model_dump(), cls=MySerializer) # { # 'id': '4f8c1bc4-25fd-40cd-9dbe-2c73639b0dc1', # 'date': '2025-12-12T12:12:12.111111', # 'value': '1.23' # } В данном случае класс MySerializer обрабатывает datetime, UUID и Decimal. Например так: class MySerializer(json.JSONEncoder): def default(self, o): if isinstance(o, Decimal): return str(o) elif isinstance(o, datetime): return o.isoformat() elif isinstance(o, UUID): return str(o) return super().default(o) Специально для тех, кто всё еще так делает - в этом нет необходимости! Pydantic может это сделать сам, просто нужно добавить параметр mode="json". json.dumps(obj.model_dump(mode="json")) # { # 'id': '4f8c1bc4-25fd-40cd-9dbe-2c73639b0dc1', # 'date': '2012-12-12T12:12:12.111111', # 'value': '1.23' # } #pydantic#libs

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STAR VET BOOKS

@starvetbooks · Post #4353 · 07.08.2024 г., 14:31

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DIFFERENT DISEASE CAN ENTER OUR FARM DUE TO RELATED AND UNRELATED CAUSES AND CAUSE DAMAGE . #Infectious agent, for example, virus, bacteria, fungi, parasites # food deficiency #management problems #Environmental problems #food poisoning Symptoms of disease in unhealthy chickens depend on the pathogen and the part of the body affected, and for the most part most diseases show these symptoms. ✔️ Shaving ✔️ Throwing wings ✔️ Diarrhea ✔️ Decreased appetite ✔️ Manbat ✔️ Paralysis ✔️ Sudden death These and similar symptoms:- When it occurs, it is important to identify sick chickens by careful observation and to consult a nearby specialist. Apart from this, giving medicine without properly identifying the disease and consulting a specialist may expose them to drug resistance, so it is appropriate to take necessary precautions. https://t.me/starvetbooks

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Hope Mobile Vet🥼🐄🐐🐈🐕‍🦺🐀💉🔬🩺

@hopevet19 · Post #48 · 20.11.2024 г., 13:22

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#TIPS some infectious disease of poultry(viral and bacterial) 1 avian influenza(orthomyxoviridae) * purple discoloration of wattles and Combs with swelling caused by abnormal accumulation of fluid * swollen head, accumulation of liquid in eyelids and comb * pinpoint bleeding under the skin(mostly seen on feet and shanks) *bleeding into the ovaries * bleeding into the gizzard *bleeding in the mucosa of trachea *bleeding in the muscle and in the fat around the heart 2 Fowl pox(poxviridae) * Dry form :- wart like nodules on the skin (Combs,face and wattles) * Wet form:- cankers are embedded in the membranes of the mouth, larynx and trachea *Wet form:- Brown nodular lesions on the mucosa membrane of larynx;when removed,an eroded area is left. 3 Marek's Disease(Herpsvirus) neurological form(progressive paralysis): * paralysis (loss of muscle function) of wings, characteristic dropping of limb. *Twisted neck (torticollis) *lameness *Brachial plexus(nerve) is two or three times the normal thickness, swelling caused by fluid(oedema) #Visceral form: * enlarged liver with diffuse grayish nodules formed by abnormal growth of tissue. Enlarged spleen with diffuse grayish discolorations. #Infectious Coryza(Haemophilus) * watery swollen eyes and face, purulent nasal exudates *Eyelids stick together by mucous and exudates. # Fowl cholera(pasteurella) blue coloration of wattles,swollen wattles and face. *Yellow-brown pus accumulated in a swollen wattles *Pus (whitish to yellow) accumulated in a hock joint. *Pinpoint bleeding in the muscles of heart #Biruk Eshetu(DVM) 0926257962

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