Fixed broken python tests

backend/app/__init__.py

@@ -1,5 +1,4 @@
 import os
-from pathlib import Path
 from dotenv import load_dotenv, find_dotenv
 
 # Load environment variables from .env file in project root

backend/app/main.py

@@ -5,7 +5,6 @@ from backend.app.problem_generator import ProblemGenerator
 
 app = FastAPI()
 
-# Add CORS middleware
 app.add_middleware(
     CORSMiddleware,
     allow_origins=["*"],  # In production, replace with specific origins

pyproject.toml

@@ -2,6 +2,7 @@
 name = "backend"
 version = "0.1.0"
 description = "Backend for the application"
+requires-python = "==3.12"
 dependencies = [
     "chainlit>=2.0.4",
     "numpy>=2.2.2",
@@ -22,8 +23,12 @@ dependencies = [
     "pytest-dotenv>=0.5.2",
     "unstructured",
     "qdrant-client>=1.6.0",
+    "ipykernel",
 ]
 
+[tool.setuptools]
+py-modules = []
+
 [project.optional-dependencies]
 test = [
     "pytest>=7.4.0",