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Gain insights into using Python and Transcrypt to build complete web applications. Delve into refactoring, adding new features, and creating cohesive frontend-backend projects with React.

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Python is already used in the backend of most web applications, but sadly it does not work with web browsers to drive the frontend of those applications. Transcrypt can help by creating more coherent web-based projects, using Python to write both the backend and the frontend.

This course builds on the lessons in Using the Python Transcrypt Transipler for Front-end Coding to implement a complete React and Python web-based project. In each chapter, we will refactor existing code to add new functionality, building up the application as you go. Each chapter ends with a running application that includes all of the features we added up to that specific point.

Using Python and Transcrypt to Build a Complete Web Application

# Login Modal View

Let’s look at the modal view, which is used as a login form. Our REST API already supports managing user sessions using the following routes:

* `/api/login` [`POST`]
* `/api/logout` [`GET`] (login required)
* `/api/ping` [`GET`] (login required)
* `/api/whoami` [`GET`] (login required)

Once we can establish a user session, we’ll use that on the client-side to determine whether the user will be allowed to edit data or not, and we’ll update the user interface accordingly.

“User Login” is one of the more involved chapters of the course because of how many places the session management touches. Fortunately, most of it is boilerplate code that we can reuse on other projects once it starts working.

# About the application

In this lesson, we’ll install and import the `notistack` library in the `pymui.py` module.

This is what the application looks like:

> **Note:** To login, use the username `admin` and password `123`

Learn how to provide the user with some information about the application using Snackbar.

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Introduction

Environment Setup

Landing Page

Modal View

REST Service

Books

Menus

User Login

Lookups

User Context

Editing Lookups

Filtering Data

Editing Books

SPA Redirect

Deploying the Application

Conclusion

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Login Modal View