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
High Protein Wan Tan
Ingredients:
For the dough:
- 250 g flour 🌾
- 1 tsp salt 🧂
- 100 ml warm water 💧
For the filling:
- 1 cm ginger 🫚
- 100 g soy granules 🌱
- 2 spring onions 🧅
- 2 cloves of garlic 🧄
- 3 mushrooms 🍄
- 1 carrot 🥕
- 4 tbsp soy sauce 🧴
- 1 tbsp starch 🌿
Additionally:
- oil for frying 🛢️
- 100 ml water for steaming 💦
#HighProtein#WanTan#HealthyEating#Vegan
@dishes
High Protein Vegetable Patties
🥕 Ingredients:
- 1 small carrot 🥕
- 1 medium potato 🥔
- 1/2 bell pepper 🌶
- 1 onion 🧅
- 50 g soy granules 🌱
- 50 g corn 🌽
- 50 ml water 💧
- 100 g flour 🌾
- 1 tbsp starch ✨
- Oil for frying 🍳
Preparation:
1️⃣ Grate the carrot & potato, dice the pepper & onion, and place in a bowl 🥣
2️⃣ Soak the soybean granules in water, then add to the bowl along with the remaining ingredients and mix well 👩🍳
3️⃣ Shape the dough into patties and sauté in a pan with a little oil until golden brown 🥘
Enjoy! 😋
#HighProtein#VegetablePatties#VeganRecipe#HealthyEating#PlantBased
@dishes
High Protein Vegetable Patties
🥕 Ingredients:
- 1 small carrot 🥕
- 1 medium potato 🥔
- 1/2 bell pepper 🌶️
- 1 onion 🧅
- 50 g soy granules 🌱
- 50 g corn 🌽
- 50 ml water 💧
- 100 g flour 🌾
- 1 tbsp starch ✨
- Oil for frying 🍳
Preparation:
1️⃣ Grate the carrot & potato, dice the pepper & onion, and place in a bowl 🥣
2️⃣ Soak the soybean granules in water, then add to the bowl along with the remaining ingredients and mix well 👩🍳
3️⃣ Shape the dough into patties and sauté in a pan with a little oil until golden brown 🥘
Enjoy! 😋
#HighProtein#VegetablePatties#VeganRecipe#HealthyEating#PlantBased
@dishes
High Protein Zucchini Frittata 🥒🍅
Ingredients:
• 450 g chickpea flour 🌱
• 800 ml water 💧
• 1 zucchini 🥒
• 10 cherry tomatoes 🍅
• 2 onions 🧅
• 1 tsp turmeric 🌞
• 1 tsp Kala Namak 🧂
• 1 tsp paprika powder 🌶️
• Pinch of salt & pepper 🧂
Toppings:
• Cherry tomatoes 🍅
• Onion rings 🧅
• Italian herbs 🌿
Preparation:
1️⃣ Mix chickpea flour with water and season 🌱
2️⃣ Add vegetables and let rest for 10 minutes ⏳
3️⃣ Heat some oil in a pan and add the mixture; decorate with toppings 🥄
4️⃣ Cover and cook on low heat for 20 minutes 🔥⏳
#FrittataTime#HighProtein#ZucchiniRecipe#VeganDelight#HealthyEating#PlantBasedCooking
@dishes
High Protein Sweet & Sour Udon Noodles 🍜💪
Ingredients:
- 250 g udon noodles 🍜
- 80 g pea or soy medallions 🌱 (vegetable broth)
- 2 carrots 🥕
- 100 g sugar snap peas 🍃
- 200 g mushrooms 🍄
- 1/2 bunch of spring onions 🧅
Sauce:
- 2 tbsp sesame oil 🌾
- 1 tbsp soy sauce 🧂
- 3 tbsp agave syrup 🍯
- 2 tbsp rice vinegar 🍚
- 50 ml pasta water (from the udon noodles) 💧
- 1 tsp sesame seeds 🌿
- 1 tsp chili flakes 🌶️
Instructions:
1. Cook udon noodles in boiling water as per instructions. Save 50 ml of pasta water. 🍲
2. In vegetable broth, cook soy or pea medallions until tender. 🥄
3. Slice carrots, sugar snap peas, mushrooms, and spring onions. 🍄🥕🍃
4. Heat sesame oil in a pan, add veggies, and stir-fry until tender-crisp. 🍳
5. Add soy sauce, agave, rice vinegar, pasta water, sesame seeds, and chili flakes to the pan. 🍶
6. Combine everything, serve, and enjoy! 😋
#SweetAndSourNoodles#HighProtein#PlantBased#UdonLove#HealthyEats#VeganNoodles#QuickMeals#FoodieFun
@dishes
High Protein Red Cabbage Rolls
Ingredients:
🥬 1 large red cabbage
🫚 4 cm ginger
🧄 3 cloves of garlic
🥕 2 carrots
🫑 2 peppers
🧅 2 spring onions
🌱 100 g soy granules
🍶 50 ml soy sauce
Toppings:
✨ Sesame, 🌿 fresh parsley, 🌶 chili flakes
Dip:
🍯 Sweet Chili Sauce
#HighProtein#RedCabbageRolls#HealthyEating#PlantBased#EasyRecipe#SoyGranules#VeggiePower#Flavorful#MealPrep
@dishes