dependency_check.py

#!/usr/bin/env python

# Import necessary libraries for dependency checks
import sys
import subprocess

def check_python_dependencies():
    # Check for Python dependencies
    try:
        subprocess.check_output(['python', '--version'])
    except OSError:
        sys.exit('Python is not installed.')

    required_packages = ['package1', 'package2', 'package3']

    for package in required_packages:
        try:
            subprocess.check_output(['pip', 'show', package])
        except subprocess.CalledProcessError:
            sys.exit(f'Required Python package {package} is not installed.')

def check_homeassistant_dependencies():
    # Check for Homeassistant dependencies
    # Add your own checks for Homeassistant dependencies

def check_hacs_dependencies():
    # Check for HACS dependencies
    # Add your own checks for HACS dependencies

def main():
    check_python_dependencies()
    check_homeassistant_dependencies()
    check_hacs_dependencies()

if __name__ == '__main__':
    main()