django

from django.db.models.signals import post_save
from django.dispatch import receiver
from django.core.mail import send_mail
from .models import User, Profile

from django.contrib import messages
from django.shortcuts import redirect, render
from django.contrib.auth.decorators import login_required


@login_required

from django.core.mail import EmailMultiAlternatives
from django.template.loader import render_to_string
from django.conf import settings


def send_welcome_email(user):

from django.contrib.auth.models import AbstractBaseUser, BaseUserManager, PermissionsMixin
from django.db import models


class CustomUserManager(BaseUserManager):
    def create_user(self, email, password=None, **extra_fields):

import csv
from django.http import StreamingHttpResponse, FileResponse


class Echo:
    """Helper for writing to streaming response."""

from django.db import transaction
from django.http import JsonResponse


@transaction.atomic
def transfer_funds(request):

from django.views.generic import ListView, DetailView, CreateView, UpdateView, DeleteView
from django.contrib.auth.mixins import LoginRequiredMixin
from django.urls import reverse_lazy
from .models import Post
from .forms import PostForm

import os
from pathlib import Path

BASE_DIR = Path(__file__).resolve().parent.parent.parent

SECRET_KEY = os.environ.get('SECRET_KEY', 'dev-secret-key-change-in-production')

import django_filters
from .models import Product


class ProductFilter(django_filters.FilterSet):
    name = django_filters.CharFilter(lookup_expr='icontains')

import re


class APIVersionMiddleware:
    """Extract API version from request and add to request object."""

from django.db import models
from django.core.exceptions import ValidationError
from django.utils import timezone


class Event(models.Model):

# Find products with specific spec value
products = Product.objects.filter(specs__weight__gte=100)

# Check if JSON key exists
products = Product.objects.filter(specs__has_key='color')