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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def run_command(args):
 """Script entry point. Lints both sets of files."""

    library_rc = 'pylintrc'
    test_rc = 'pylintrc.test'

    if os.path.exists(library_rc):
        os.remove(library_rc)

    if os.path.exists(test_rc):
        os.remove(test_rc)

    default_config = read_config(get_default_config())
    user_config = load_local_config(args.config)
    configuration = determine_final_config(user_config)

    make_rc(default_config, library_rc,
            additions=configuration.library_additions,
            replacements=configuration.library_replacements)
    make_rc(default_config, test_rc,
            additions=configuration.test_additions,
            replacements=configuration.test_replacements)

    lint_fileset(*args.library_filesets, rc_filename=library_rc,
                 description='Library')
    lint_fileset(*args.test_filesets, rc_filename=test_rc,
                 description='Test')