from django.db import models
from django.http import JsonResponse
from flask import Flask, request, jsonify
from fastapi import FastAPI
from sqlalchemy.orm import Session
import requests
import json
class Product(models.Model):
name = models.CharField(max_length=200)
price = models.DecimalField(max_digits=10, decimal_places=2)
def product_list_view(request):
"""Clean: uses .count() and slice."""
qs = Product.objects.filter(active=True)
count = qs.count()
items = qs[:10]
return JsonResponse({"count": count})
def related_clean_view(request):
"""Clean: uses select_related."""
orders = Order.objects.select_related("customer").all()
for order in orders:
print(order.customer.name)
def bulk_create_clean(request):
"""Clean: uses bulk_create."""
products = [Product(name=n) for n in request.POST.getlist("names")]
Product.objects.bulk_create(products)
app = Flask(__name__)
@app.route("/parse", methods=["POST"])
def flask_clean_view():
"""Clean: parses body once."""
data = request.get_json()
return jsonify(data)
@app.route("/db")
def flask_db_clean():
"""Clean: no inline connection."""
return jsonify({"ok": True})
fastapi_app = FastAPI()
@fastapi_app.get("/async")
async def fastapi_async_view():
"""Clean: async handler."""
return {"data": "ok"}
def sqlalchemy_clean():
"""Clean: uses session properly."""
session = Session()
try:
result = session.query(Product).all()
finally:
session.close()
def clean_handler(request):
"""Clean: single upstream call with timeout."""
resp = requests.get("https://api.example.com/data", timeout=10)
resp.raise_for_status()
return resp.json()
def process_internal():
"""Clean: not a handler, plain utility."""
data = {"key": "value"}
return json.dumps(data)