How To Install python3-clap on Ubuntu
Posted on April 1, 2023 (Last modified on May 20, 2023 )
3 minutes • 612 words
Introduction
In this tutorial we learn how to install python3-clap on Ubuntu.
What is python3-clap
python3-clap is:
CLAP aims at being powerful and advanced command line interface library for Python 3 language. Having built-in support for modes, optional and obligatory options, options with arguments (with type-checking with arbitrary types) it enables programmers to create rich command line interfaces for Python 3 programs.
Features:
- Support for single-level and nested modes (with per-mode and global options).
- Support for grouped short options (ls -lhR).
- Support for long options with or without equal-sign-connected arguments (–log=./file.log and –log ./file.log are both correct).
- Support for option aliases (short/long names).
- Support for typed arguments (str, int, float built-in and other arbitrary types via callbacks).
- Built-in type checking of option arguments.
- Support for multiple arguments for options (e.g. –point 0 0).
- Checking for missing arguments with options which require them.
- Checking for conflicting options (eg. –quiet must not come with option –verbose).
- Support for options that MUST be passed to the program.
- Support for options required by other options (e.g. –key requires –value).
- Support for options wanted by other options (e.g. –which wants –this or –that or both).
- Good set of exceptions with detailed error messages.
- Ability to load interface from JSON descriptions.
- Automatic generation of help screens (for your-tool help command) with per-mode, per-option, and per-operand descriptions, usage examples, and more.
- Support for shortcuts for command names (shortest-unique name is sufficient for CLAP to resolve the command, it is not necessary to write full names).
CLAP is not the most easy to use command line arguments parser for Python, but that it is one of the most powerful (if not the most powerful) framework for writing command line interfaces. With excellent support for modes, options, and operands, automatic input verification, and help screen generation you get a big return on your investment.
There are three methods to install python3-clap on Ubuntu. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install python3-clap Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install python3-clap using apt-get by running the following command:
sudo apt-get -y install python3-clap
Install python3-clap Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install python3-clap using apt by running the following command:
sudo apt -y install python3-clap
Install python3-clap Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install python3-clap using aptitude by running the following command:
sudo aptitude -y install python3-clap
How To Uninstall python3-clap on Ubuntu
To uninstall only the python3-clap package we can use the following command:
sudo apt-get remove python3-clap
Uninstall python3-clap And Its Dependencies
To uninstall python3-clap and its dependencies that are no longer needed by Ubuntu, we can use the command below:
sudo apt-get -y autoremove python3-clap
Remove python3-clap Configurations and Data
To remove python3-clap configuration and data from Ubuntu we can use the following command:
sudo apt-get -y purge python3-clap
Remove python3-clap configuration, data, and all of its dependencies
We can use the following command to remove python3-clap configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge python3-clap
Dependencies
python3-clap have the following dependencies:
References
Summary
In this tutorial we learn how to install python3-clap package on Ubuntu using different package management tools: apt, apt-get and aptitude.