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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 linkorcopy(self, src, dst):
 """hardlink src file to dst if possible, otherwise copy."""

        if os.path.isdir(dst):
            log.warn('linkorcopy given a directory as destination. '
                     'Use caution.')
            log.debug('src: %s  dst: %s', src, dst)
        elif os.path.exists(dst):
            os.unlink(dst)
        elif not os.path.exists(os.path.dirname(dst)):
            os.makedirs(os.path.dirname(dst))
        if self.linkfiles:
            log.debug('Linking: %s -> %s', src, dst)
            os.link(src, dst)
        else:
            log.debug('Copying: %s -> %s', src, dst)
            shutil.copy2(src, dst)