Arch list explicitly installed packages that are are depended on by other softwares

main.py

#!/usr/bin/env python3
"""
list explicitly installed packages that are are depended on by other softwares
"""

import subprocess

def parse_pacman_output(data: str):
    packages = {}
    current_package = None

    for line in data.split("\n"):
        if line.startswith('Name'):
            current_package = line.split(':')[1].strip()
            packages[current_package] = {'explicit': False, 'required_by': []}
        elif line.startswith('Install Reason'):
            if 'Explicitly installed' in line:
                packages[current_package]['explicit'] = True
        elif line.startswith('Required By'):
            required_by = line.split(':')[1].strip()
            if required_by != 'None':
                packages[current_package]['required_by'] = required_by.split()

    return packages

def find_explicit_and_required_packages(packages):
    result = []
    for package, details in packages.items():
        if details['explicit'] and details['required_by']:
            result.append(package)
    return result

if __name__ == "__main__":
    data = subprocess.check_output(['pacman', '-Qi'], text=True)
    packages = parse_pacman_output(data)
    explicit_and_required_packages = find_explicit_and_required_packages(packages)
    
    for package in explicit_and_required_packages:
        print(package)