import platform

import pyscreenshot
from pyscreenshot import backend_version


def print_name_version(name, version):
    s = "{:<20} {}".format(name, version)
    print(s)


def print_versions():
    print_name_version("python", platform.python_version())
    print_name_version("pyscreenshot", pyscreenshot.__version__)

    for name in pyscreenshot.backends():
        v = backend_version(name)
        if not v:
            v = ""
        print_name_version(name, v)


if __name__ == "__main__":
    print_versions()