Making a neat installable Python library with Click
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In this tutorial, we will walk through the process of creating a neat and installable Python library using Click, a popular Python package for building command-line interfaces (CLIs). By the end of this tutorial, you will have a simple Python library with a command-line interface that users can easily install and use.
Before we start, make sure you have Python installed on your system. You can download it from python.org.
Create a new directory for your project and navigate into it:
Initialize a new Python project using pip:
Follow the prompts to set up your setup.py file. This file will contain information about your project.
Install the Click library using pip:
Create a new Python file, for example, mycli.py, and open it in your preferred text editor.
This simple script defines a Click command called hello that prints a greeting when executed.
Update your setup.py file to include the necessary information and make your script installable. Open the setup.py file and modify it as follows:
This modification tells setuptools to create a script named mycli that will execute the hello function in your mycli module.
Run the following commands to build and install your library:
This will install your CLI application globally, making it accessible from the command line.
Now you can run your CLI application from the command line:
You should see the greeting message printed to the console.
Congratulations! You've successfully created a neat and installable Python library with Click. This simple example demonstrates the basic steps, and you can expand on it to build more complex and feature-rich command-line interfaces for your projects.
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