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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 _is_skippable(filename_full):
 """Handle things that are not optimizable files."""


    # File types
    if not Settings.follow_symlinks and os.path.islink(filename_full):
        return True
    if os.path.basename(filename_full) == timestamp.RECORD_FILENAME:
        return True
    if not os.path.exists(filename_full):
        if Settings.verbose:
            print(filename_full, 'was not found.')
        return True

    return False