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Web App Development Made Simple with Streamlit

Web App Development Made Simple with Streamlit

By : Moscato
4.3 (10)
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Web App Development Made Simple with Streamlit

Web App Development Made Simple with Streamlit

4.3 (10)
By: Moscato

Overview of this book

This book is a comprehensive guide to the Streamlit open-source Python library and simplifying the process of creating web applications. Through hands-on guidance and realistic examples, you’ll progress from crafting simple to sophisticated web applications from scratch. This book covers everything from understanding Streamlit's central principles, modules, basic features, and widgets to advanced skills such as dealing with databases, hashes, sessions, and multipages. Starting with fundamental concepts like operation systems virtualization, IDEs, development environments, widgets, scripting, and the anatomy of web apps, the initial chapters set the groundwork. You’ll then apply this knowledge to develop some real web apps, gradually advancing to more complex apps, incorporating features like natural language processing (NLP), computer vision, dashboards with interactive charts, file uploading, and much more. The book concludes by delving into the implementation of advanced skills and deployment techniques. By the end of this book, you’ll have transformed into a proficient developer, equipped with advanced skills for handling databases, implementing secure login processes, managing session states, creating multipage applications, and seamlessly deploying them on the cloud.
Table of Contents (23 chapters)
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1
Part 1: Getting Started with Streamlit
5
Part 2: Building a Basic Web App for Essential Streamlit Skills
10
Part 3: Developing Advanced Skills with a Covid-19 Detection Tool
15
Part 4: Advanced Techniques for Secure and Customizable Web Applications

Understanding new features related to deep customization

For this chapter, no new packages are needed – all we need is Streamlit. Let’s start by creating a new empty Python file; as usual, you can call it app.py. Then, open the IDE. We can start coding by just importing streamlit and adding a title both in the sidebar and in the main part of the web application, as shown in Figure 14.1:

Figure 14.1: The starting code

Figure 14.1: The starting code

Launching the application opens the browser on localhost at port 8501 and, as usual, we get something like this:

Figure 14.2: The starting web app

Figure 14.2: The starting web app

This is very simple: we get the same title in the sidebar and the main part of the web app. Taking a closer look, we can find some very interesting elements that can be customized:

Figure 14.3: App title and icon, footer, and menu

Figure 14.3: App title and icon, footer, and menu

In Figure 14.3, we have the following:

  • In red, we can see the title and icon of our web...

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