Python for React Redux Developers

Organize reusable Python code with modules, packages, and imports.

Read and write structured data using files and JSON.

Handle expected failures with specific exceptions and cleanup logic.

Define classes with instance attributes, methods, and constructors.

Model collaborating objects using composition.

Add type hints and verify code with a static type checker.

Use iterables and generators to process data without unnecessary intermediate collections.

Write focused unit tests with pytest fixtures and assertions.

Track a project with meaningful Git commits and a practical .gitignore file.

Develop a feature on a Git branch and merge it into the main branch.

Create PostgreSQL tables with appropriate data types and constraints.

Insert, update, delete, and select relational data with SQL.

Combine related data using inner and outer joins.

Model one-to-many and many-to-many relationships for an e-commerce domain.

Normalize an e-commerce schema to reduce duplication while preserving useful queries.

Use transactions to keep multi-step database changes consistent.

Explain how HTTP methods, status codes, headers, and JSON participate in a web request and response.

Create a Django project and separate its functionality into applications.

Configure Django settings for installed applications, middleware, templates, and environment-specific values.

Map URL patterns to Django views and return appropriate responses.

Render database-backed content with Django templates.

Validate and process user input with Django forms.

Use Django migrations to create and evolve database tables.

Inspect and manage application data through the Django admin site.

Define category and product models with field validation and useful string representations.

Model product variants, prices, and inventory in the Django ORM.

Represent customer carts and cart items with appropriate model relationships.

Represent orders and immutable order-line snapshots in the data model.

Query, filter, aggregate, and order records with Django QuerySets.

Prevent inefficient relationship loading with select_related and prefetch_related.

Enforce business invariants with model constraints and service-layer validation.

Perform order and inventory updates atomically with database transactions.

Describe REST resource design and map CRUD operations to HTTP methods and status codes.

Serialize Django model instances with Django REST Framework serializers.

Validate incoming API data with field-level and object-level serializer validation.

Build CRUD endpoints with generic views and viewsets.

Register resource routes with Django REST Framework routers.

Represent related resources without causing excessive database queries.

Add filtering, search, ordering, and pagination to collection endpoints.

Test an API endpoint's response status, headers, and JSON body.

Authenticate API users with short-lived JSON Web Tokens and refresh tokens.

Restrict API operations with Django REST Framework permission classes.

Enforce object-level ownership rules for customer resources.

Configure CORS and CSRF protections for a separate React frontend.

Implement anonymous and authenticated cart workflows.

Convert a validated cart into an order within a database transaction.

Prevent overselling when concurrent requests modify inventory.

Return consistent, client-safe API errors for authentication and business-rule failures.

Transform arrays and objects with modern JavaScript syntax without mutating source data.

Handle promise-based operations with async/await and structured error handling.

Build React function components using props and composition.

Manage local component state and derived values with React hooks.

Synchronize a component with an external system using useEffect and cleanup logic.

Build validated controlled forms in React.

Configure client-side navigation with nested and protected routes.

Manage shared application state with Redux Toolkit slices and selectors.

Configure a reusable frontend API client with environment-based settings.

Define cached API endpoints with Redux Toolkit Query.

Render a product catalog with loading, empty, success, and error states.

Implement product search, filtering, sorting, and pagination in the storefront.

Connect registration, login, token refresh, and logout flows to the Django API.

Persist and reconcile a shopping cart across browser and authenticated sessions.

Submit checkout data and display field-level and business-rule validation errors.

Display authenticated customers' order history and order details.

Create a test-mode checkout session with a hosted payment provider.

Verify payment webhook signatures before processing payment events.

Process repeated payment events idempotently.

Transition orders through valid payment and fulfillment states.

Store configuration and secrets outside source control.

Log backend failures with enough context for diagnosis without exposing sensitive data.

Add rate limits to authentication and other abuse-prone endpoints.

Document security and failure-handling decisions for the portfolio project.

Test Django model constraints and e-commerce service functions with pytest.

Test authenticated API workflows and permission failures.

Test React user interactions with React Testing Library.

Create deterministic demo data for local development and portfolio review.

Containerize the React, Django, and PostgreSQL services with Docker Compose.

Run automated backend and frontend checks in a continuous-integration workflow.

Deploy the application with production database, static-file, and environment configuration.

Perform a post-deployment smoke test of the critical purchase workflow.

Generate and present accurate OpenAPI documentation for the backend.

Write a project README covering setup, architecture, key decisions, and trade-offs.

Improve the storefront's responsive layout and keyboard accessibility.

Use browser and server diagnostics to trace a failed request across the full stack.

Measure one slow API query and improve it using evidence from query inspection.

Solve representative entry-level Python collection and function coding exercises.

Explain the project's authentication, data model, state management, and transaction design in an interview-style walkthrough.

Write evidence-based résumé bullets that describe the project's technical scope and outcomes.