python

import uuid
from django.db import models


class Cart(models.Model):
    OPEN = "open"

from datetime import datetime

from flask_sqlalchemy import SQLAlchemy

db = SQLAlchemy()

import abc
from typing import IO


class Exporter(abc.ABC):
    name: str = ""

from sqlalchemy import select

from .models import Order, db


def stream_orders(batch_size=1000):

from django.db import migrations


def populate_slugs(apps, schema_editor):
    """Generate slugs for existing posts."""
    Post = apps.get_model('blog', 'Post')

import random


class ReadWriteRouter:
    """Route reads to replicas, writes to primary."""

from blog.models import Post


# Load only specific fields
posts = Post.objects.only('id', 'title', 'published_at')
for post in posts:

import magic
from django import forms
from django.core.exceptions import ValidationError
from django.template.defaultfilters import filesizeformat

import threading
from contextlib import contextmanager

_state = threading.local()

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql',
        'NAME': 'mydb',
        'USER': 'myuser',
        'PASSWORD': 'mypassword',

# Debug Toolbar setup
INSTALLED_APPS += ['debug_toolbar']

MIDDLEWARE = [
    'debug_toolbar.middleware.DebugToolbarMiddleware',
] + MIDDLEWARE

from rest_framework.pagination import PageNumberPagination, CursorPagination


class StandardResultsSetPagination(PageNumberPagination):
    page_size = 25
    page_size_query_param = 'page_size'