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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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djangoproject

@djangoproject · Post #546 · 11.01.2018 г., 14:20

https://mborgerson.com/creating-an-executable-from-a-python-script/ Creating an Executable from a Python Script Python is one of my favorite programming languages. That being said, if you've ever had to deploy an application written in Python then you know just how painful it can be. #PyInstaller

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djangoproject

@djangoproject · Post #225 · 15.01.2017 г., 07:15

http://www.pyinstaller.org/ #PyInstaller is a program that #freezes (#packages) Python programs into #stand_alone#executables, under Windows, Linux, Mac OS X, FreeBSD, Solaris and AIX. Its main advantages over similar tools are that PyInstaller works with Python 2.7 and 3.3—3.5, it builds smaller executables thanks to transparent compression, it is fully multi-platform, and use the OS support to load the dynamic libraries, thus ensuring full compatibility.

djangoproject

@djangoproject · Post #521 · 13.12.2017 г., 19:57

https://www.infoworld.com/article/3230202/python/6-essential-libraries-for-every-python-developer.html 6 essential libraries for every Python developer Whether you're compiling Python for speed, building native UIs for Python desktop apps, or refining existing Python code, these Python projects have you covered Python has seen wide adoption across industries and disciplines by dint of being easy to work with. But it has also been aided by a wealth of third-party projects—libraries, add-ons, and complementary development efforts—that extend the language to an ever widening range of use cases. #PyPy #CFFI(C Foreign Function Interface library) #PyInstaller #PBR(Python Build Reasonableness) #WxPython #Mypy

djangoproject

@djangoproject · Post #298 · 17.04.2017 г., 07:42

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djangoproject

@djangoproject · Post #425 · 28.08.2017 г., 03:37

#AI#Artificial_Intelligence #aiohttp #AngularJS #API #AWS #asyncio #audio #automated_testing #automation #atexit #BeeWare #button #client #concurrency #Coroutine #cron #curl #data_analysis #data_mining #data_processing #database #Deep_Learning #Debian #decorator #dict #dispatch #django #django_cms #dropdownbox #Docker #event #Firefox #form #Generator #GeoDjango #git #Google #GPU #Gym #learn #Image_processing #intelligence #input #IOT #lambda #learn #lists #machine_learning #Magenta #map #Metaprogramming #Micro_services #mind #monitoring #MongoDB #Mozilla #Multipart #multi_touch_apps #multiprocessing #Nodes #NoSQL #numeric_computation #numerical #NumPy #OAuth #object_serialization #OCR #overloading #package #parallel #pipeline #protocols #PostGIS #pyAudioAnalysis #pycon #Pyflakes #PyInstaller #PySide #PyTorch #pytest #python #Pyvideo_archives #Qt #React #Redis #random #request #REST #satellite #scrapy #scikit_learn #SciPy #searching #submit #selectbox #Selenium #serialization #server #socket #task #telegram #TensorFlow #test #text_boxes #text #tuples #unicode #Universe #Unix #urllib #upload #Web

djangoproject

@djangoproject · Post #513 · 30.11.2017 г., 22:00

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