Welcome to the world of Neutron, where developers can seamlessly create native Python applications, complete with stunning HTML and CSS frontend designs. The magic behind Neutron lies in its usage of pywebview, allowing for smooth integration between the backend and frontend. Today, we’ll walk you through the installation process, project building, and some examples that showcase its capabilities.

Installation

Before diving into development, you need to set up Neutron on your local machine. To install Neutron, simply use pip:

pip install neutron-web

Building Your Project

Once you have installed Neutron, you’ll want to set up the building environment. This is where PyInstaller comes into play. It packages your Python applications into standalone executables. Here’s how to get started:

1. Install PyInstaller

Run the following command in your command prompt or terminal:

pip install pyinstaller

2. Build Your Project

Running the build command is where the fun begins. Use the following command, replacing placeholders with your actual file names:

pyinstaller YOUR_PYTHON_FILE.py --noconsole --onefile --add-data=YOUR_HTML_FILE.html;. --add-data=YOUR_CSS_FILE.css;.

Note: If you’re on Linux, replace ‘;’ with ‘:’ in the command. Also, it’s acceptable to skip the –add-data part if your project doesn’t incorporate HTML or CSS files.

Examples to Illuminate Your Learning

Let’s dive into some examples. Think of building a Neutron project like constructing a house. The Python code acts as the foundation and basic structure, while the HTML/CSS can be thought of as the walls and roof that beautify and make the house functional.

Full Example

To view a fully set-up project with CSS and HTML, check out the TEMPLATE available on GitHub. This example reflects how traditional websites built with JavaScript are structured.

Quick Example with Just Python

For smaller projects, you can create an application using only a Python file:

import Neutron

win = Neutron.Window("Example")
HeaderObject = Neutron.elements.Header(win, id="title", content="Hello")

def setName():
    HeaderObject.setAttribute("style", "color: red;")
    HeaderObject.innerHTML = "Hello world!"
    win.getElementById("submit").innerHTML = "clicked!"

Neutron.elements.Button(win, id="submit", content="Hi", onclick=Neutron.event(setName))
win.show()

Using In-Python HTML

Here’s a way to integrate HTML directly within your Python script:

import Neutron

win = Neutron.Window("Example")

def setName():
    name = win.getElementById("inputName").value
    win.getElementById("title").innerHTML = "Hello: " + name

win.display(f"""


    


    
Hello:
    
    Submit

""", pyfunctions=[setName])
win.show()

Managing Load Times

When working on larger projects, Neutron has a built-in loader system that can help with slow loading times:

import Neutron

win = Neutron.Window("Example", size=(600, 100))

# The loader displays while all other elements and CSS load
win.loader(content="
Loading App...
", color="#fff", after=lambda: win.toggle_fullscreen())

Creating Multiple Windows

Sometimes, you might want to open multiple windows based on user interactions. Here’s how:

def createNewWindow():
    win = Neutron.Window("Example", size=(600, 100), childwindow=True)
    win.display(file="secondwindow.html")
    win.show()

Troubleshooting

If you encounter any issues while building your Neutron project, consider the following troubleshooting tips:

• Dependency Issues: Ensure all required packages are installed using pip.
• File Paths: Double-check that the paths to your HTML and CSS files are correct.
• Error Handling: Look for syntax errors in your Python code as they may prevent the build process from completing.

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Conclusion

At fxis.ai, we believe that such advancements are crucial for the future of AI, as they enable more comprehensive and effective solutions. Our team is continually exploring new methodologies to push the envelope in artificial intelligence, ensuring that our clients benefit from the latest technological innovations.