python

python
import hmac
import hashlib
import time
from fastapi import Request, HTTPException, status

Verifying Stripe Webhook Signatures With a Reusable FastAPI Dependency

fastapi webhooks security
by codesnips 3 tabs
python
import logging
import re

_BASE_FIELDS = set(logging.makeLogRecord({}).__dict__.keys())

_PATTERNS = [

Redacting Sensitive Fields in Structured Python Logs with a logging.Filter

logging security redaction
by codesnips 3 tabs
python
from decimal import Decimal

from django.db import models
from django.db.models import F, ExpressionWrapper, DecimalField

Annotate Invoice Line Totals in a Django ListView Queryset

django orm queryset
by codesnips 3 tabs
python
from celery import shared_task
from django.core.mail import send_mail
from django.contrib.auth import get_user_model

User = get_user_model()

Django celery task for async email sending

django python celery
by Priya Sharma 2 tabs
python
from rest_framework.versioning import BaseVersioning
from rest_framework.exceptions import NotAcceptable


class AcceptHeaderVersioning(BaseVersioning):
    default_version = "1"

Versioning a DRF Resource With Accept-Header Content Negotiation

django drf rest-api
by codesnips 4 tabs
python
from django.conf import settings
from datetime import datetime


def site_settings(request):
    """Add site-wide settings to template context."""

Django context processors for global template variables

django python templates
by Priya Sharma 2 tabs
python
import re

text = 'INC-102301 resolved on 2026-04-06 after payment failure for order ORD-99182.'

patterns = {
    'incident_id': r'INC-[0-9]{6}',

Regular expressions for extracting structured entities from raw text

regex text-processing parsing
by Dr. Elena Vasquez 1 tab
python
from collections import defaultdict
from dataclasses import dataclass, field
from typing import Callable, Dict, List, Set


class CycleError(Exception):

Topological Task Scheduling With Cycle Detection and Parallel Waves

scheduling topological-sort dag
by codesnips 3 tabs
python
import torch.nn as nn
from torchvision.models import resnet50, ResNet50_Weights

model = resnet50(weights=ResNet50_Weights.IMAGENET1K_V2)

for parameter in model.parameters():

Transfer learning with pretrained torchvision backbones

pytorch transfer-learning torchvision
by Dr. Elena Vasquez 1 tab
python
from django import forms
from .models import Event


class EventForm(forms.ModelForm):
    class Meta:

Django form validation with clean methods

django python forms
by Priya Sharma 1 tab
python
import asyncio
from typing import Awaitable, Callable, Dict, TypeVar

T = TypeVar("T")

Coalesce Duplicate In-Flight Requests with an Asyncio Single-Flight Cache

asyncio concurrency caching
by codesnips 3 tabs
python
from enum import Enum
from typing import Optional

from fastapi import Query
from pydantic import BaseModel, Field, field_validator

Validate and Normalize Query Filters With a Pydantic Dependency in FastAPI

fastapi pydantic validation
by codesnips 3 tabs