Enrique Soria EnriqueSoria

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pythoning

Software developer at @KaveTech. Created festivales.wiki

EnriqueSoria / json_extract_and_cast.py

Created November 18, 2025 17:15

Extract and cast values from a `TextField` or `JSONField` (in Django)

	from django.db.models import CharField
	from django.db.models import Func
	from django.db.models import Value
	from django.db.models.functions import Cast


	class JSONExtractAndCast(Cast):
	def __init__(self, expression, *paths, output_field):
	# borrowed from django_mysql.models.functions.JSONExtract
	exprs = [expression]

EnriqueSoria / create_random_datetimes.py

Created November 14, 2025 08:40

Create random datetimes

	import datetime
	import random


	def create_random_datetime_between_dates(
	start: datetime.datetime,
	end: datetime.datetime,
	) -> datetime.datetime:
	random_timestamp = random.uniform(start.timestamp(), end.timestamp())
	return datetime.datetime.fromtimestamp(random_timestamp)

EnriqueSoria / lazy_list.py

Created November 22, 2024 10:16

A (Python) list-like interface for iterables, that is lazy, a.k.a: only evaluates the iterable when needed

	from __future__ import annotations

	import itertools
	import collections
	from typing import TypeVar
	from typing import Iterable
	from typing import Iterator

	T = TypeVar("T")

EnriqueSoria / django_get_duplicated_instances.py

Created October 16, 2024 13:37

Get duplicated instances in Django

	from typing import List

	from django.core.exceptions import FieldError
	from django.db.models import Count
	from django.db.models import Q
	from django.db.models import QuerySet


	def get_duplicate_instances(queryset: QuerySet, fields: List[str]) -> List[QuerySet]:
	"""

EnriqueSoria / generic_model_instance.py

Created December 5, 2023 14:03

Utility to serialize generic model instances

	from __future__ import annotations

	from typing import Any
	from typing import NamedTuple

	from django.contrib.contenttypes.models import ContentType
	from django.db import models


	class GenericModelInstance(NamedTuple):

EnriqueSoria / pyproject.toml

Created November 3, 2023 15:33

My ruff configuration


	[tool.ruff]
	target-version = "py39"
	line-length = 100
	src = ["app", "tests"]
	select = [
	"E", # pycodestyle
	"F", # Pyflakes
	"TID251", # https://docs.astral.sh/ruff/rules/banned-api/
	"TID252", # https://docs.astral.sh/ruff/rules/relative-imports/

EnriqueSoria / custom_drf_serializer_fields.py

Last active October 20, 2023 11:33

Like SerializerMethodField, but formatting returned value with another serializer

	from __future__ import annotations

	from rest_framework import serializers


	class FormattedSerializerMethodField(serializers.SerializerMethodField):
	"""
	Like SerializerMethodField, but allowing you to apply an optional
	formatter serializer to the field's output.
	"""

EnriqueSoria / drf_child_source_list_serializer.py

Last active October 20, 2023 11:39

Django Rest Framework list serializer that allows you to specify a "source" field in the child serializer

	from rest_framework import serializers
	from rest_framework.fields import get_attribute


	class ChildSourceListSerializer(serializers.ListSerializer):
	"""List serializer that respects child's `source` field"""

	def get_attribute(self, instance):
	attribute = super().get_attribute(instance)
	return [get_attribute(item, self.child.source_attrs) for item in attribute]

EnriqueSoria / validate_dataclass.py

Last active July 18, 2024 13:25 — forked from rochacbruno/validate_dataclass.py

Validate Dataclass Python

	import logging


	from dataclasses import dataclass
	from typing import Union, List

	logger = logging.getLogger(__name__)


	class Validations:

EnriqueSoria / dict_getter.py

Last active September 9, 2022 09:16

	import functools
	from typing import Any
	from operator import getitem


	def get_from_path(data: dict, *path, default: Any = None) -> Any:
	"""
	Safe get data given a path returning a default value

	>>> mydict = {"first": {"second": [3, 4]}}