check_if_installed.py

"""This file checks, if the package is installed on the current system."""
import os
import sys
import argparse
from importlib import import_module


def main():
    """
    Check if the package name is installed.
    Returns true, if the package is installed, otherwise false.
    """
    try:
        # Parse the argument as project name
        desc_string = "Check if the python package is installed."
        parser = argparse.ArgumentParser(description=desc_string)
        parser.add_argument('package_name', action="store", type=str)
        package_name = parser.parse_args().package_name

        import_module(package_name)
        print('true')
    except ImportError:
        print('false')


if __name__ == "__main__":
main()