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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 get_cache_key(bucket, name, args, kwargs):
 """ Gets a unique SHA1 cache key for any call to a native tag. Use args and kwargs in hash so that the same arguments use the same key """

    u = ''.join(map(str, (bucket, name, args, kwargs)))
    return 'native_tags.%s' % sha_constructor(u).hexdigest()