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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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bjjfanaticsinstructionals

@bjjfanaticsinstructionals · Post #1936 · 18.04.2026 г., 19:16

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🔥NEW RELEASE🔥 😁Systematically Attacking The Half Guard and Scrimmaging: Whizzer vs Underhook by Gordon Ryan😁 ➡️In Systematically Attacking The Half Guard and Scrimmaging: Whizzer vs Underhook, Gordon Ryan breaks down one of the most common—and misunderstood—positions in all of Jiu-Jitsu, and turns it into a clear, repeatable system you can rely on every time. ➡️Widely regarded as the most accomplished No-Gi grappler of all time, Gordon is known for his unmatched submission rate and his ability to teach complex positions with precision and clarity. This series is a perfect example of that. $349😍$24.99😍 ❗️Channel Info and FAQ (MUST CHECK BEFORE BUY)❗️ 📱Payment: 📱📱📱 💰Submeta FOR FREE 👑MasterClass ✈️@bjjfanaticsinstructionals #GordonRyan#Sweeps#NoGi#NewWave 💁‍♀️Buy 💁‍♀️

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bjjfanaticsinstructionals

@bjjfanaticsinstructionals · Post #1892 · 18.12.2025 г., 00:34

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🔥NEW RELEASE🔥 😁Knee Lever Masterclass by Brian Glick😁 ➡️The Knee Lever Masterclass from Brian Glick, a John Danaher black belt and one of BJJ Fanatics’ best-selling instructors, is your complete system for turning one of Jiu-Jitsu’s most underrated techniques into a powerful, all-position weapon ➡️Known for his world-class instruction, clear communication, and simple, effective systems, Brian once again delivers an instructional packed with precise details and universal concepts that make complex ideas easy to apply. $197😍$14.99😍 ❗️Channel Info and FAQ (MUST CHECK BEFORE BUY)❗️ 📱Payment: 📱📱📱 💰Submeta FOR FREE 👑MasterClass ✈️@bjjfanaticsinstructionals #BrianGlick#Sweeps#NoGi#NewWave 💁‍♀️Buy 💁‍♀️

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bjjfanaticsinstructionals

@bjjfanaticsinstructionals · Post #1873 · 05.11.2025 г., 03:52

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🔥NEW RELEASE🔥 😁Master The Move: The Butterfly Guard Sweep Sumi Gaeshi by John Danaher😁 ➡️In Master The Move: The Butterfly Guard Sweep Sumi Gaeshi, Danaher breaks down what many consider the single most effective sweep in grappling. ➡️Now, for the first time, Danaher reveals the complete system behind the Sumi Gaeshi sweep from butterfly guard — the same position that connects effortlessly to leg locks, back takes, and devastating top control sequences. $197😍$19.99😍 ❗️Channel Info and FAQ (MUST CHECK BEFORE BUY)❗️ 📱Payment: 📱📱📱 💰Submeta FOR FREE 🌈UFC Picks 👑MasterClass ✈️@bjjfanaticsinstructionals #JohnDanaher#Sweeps#NoGi#NewWave 💁‍♀️Buy 💁‍♀️

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bjjfanaticsinstructionals

@bjjfanaticsinstructionals · Post #1931 · 12.04.2026 г., 00:30

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😁Top 10 Sweeps and Reversals by Magid Hage😁 ➡️In Top 10 Sweeps and Reversals, Magid Hage breaks down the most basic, high-percentage sweeping techniques that every Brazilian Jiu-Jitsu practitioner should have in their game. ➡️This course focuses on simplicity, timing, and efficiency, showing you how to off-balance your opponent and reverse the position with minimal strength and maximum control. $79😍$9.99😍 ❗️Channel Info and FAQ (MUST CHECK BEFORE BUY)❗️ 📱Payment: 📱📱📱 💰Submeta FOR FREE 👑MasterClass ✈️@bjjfanaticsinstructionals #MagidHage#Sweeps#NoGi#IBJJF 💁‍♀️Buy 💁‍♀️

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bjjfanaticsinstructionals

@bjjfanaticsinstructionals · Post #1868 · 15.10.2025 г., 17:48

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😁Precision Sweeps And Wrestle Ups From The Seated Position By Shawn Melanson😁 ➡️Master the art of disrupting standing passers with surgical precision. In his fourth and most dynamic instructional to date, best-selling BJJ coach Shawn Melanson delivers a comprehensive system for attacking from the seated guard — blending positional off-balancing, precision timing, and relentless wrestle-ups to systematically frustrate and dismantle your opponent’s passing game. ➡️Shut down standing passers with precision sweeps, wrestle-ups, and off-balancing tactics from seated guard in Shawn Melanson’s latest high-level BJJ instructional. $79😍$9.99😍 ❗️Channel Info and FAQ (MUST CHECK BEFORE BUY)❗️ 📱Payment: 📱📱📱 💰Submeta FOR FREE 🌈UFC Picks 👑MasterClass ✈️@bjjfanaticsinstructionals #ShawnMelanson#Sweeps#NoGi#WrestleUp 💁‍♀️Buy 💁‍♀️

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