def get_cache_key(bucket, name, args, kwargs):
u = '<STR_LIT>'.join(map(str, (bucket, name, args, kwargs)))<EOL>return '<STR_LIT>' % sha_constructor(u).hexdigest()<EOL>
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