<p>您可以使用组合(双关语)或<code>itertools.combinations()</code>和<code>set()</code>来获得所有唯一的组合:</p>
<pre><code>>>> import itertools
>>>
>>> listTags = [ "TOT" , "WBA", "BUR", "SOU", "HUL", "SUN", "STK", "SWA",
... "ARS", "CHE", "MUN", "WHU", "WAT", "MID" "WHU", "CRY", "LEI",
... "EVE", "MCI", "LIV"]
>>>
>>> combinations = set('#{pair[0]}{pair[1]}'.format(pair=pair) for pair in itertools.combinations(listTags, 2))
>>> combinations
set(['#TOTWBA', '#BURMUN', '#HULLEI', '#WBASUN', '#HULWHU', '#SUNSWA', '#BURSWA', '#TOTCRY', '#MUNCRY', '#SOUSTK', '#WATCRY', '#SUNLIV', '#STKCHE', '#STKCRY', '#TOTSUN', '#LEILIV', '#EVELIV', '#STKSWA', '#TOTBUR', '#EVEMCI', '#SOUWAT', '#SUNEVE', '#SWAWAT', '#LEIMCI', '#TOTCHE', '#MUNMCI', '#WBASTK', '#SUNLEI', '#BURLEI', '#BURMCI', '#SOUCRY', '#BURWHU', '#HULWAT', '#WHUEVE', '#WBALIV', '#ARSMCI', '#SOUSUN', '#MUNEVE', '#BURSOU', '#WHUMIDWHU', '#ARSLEI', '#SWAMIDWHU', '#SOUARS', '#WBABUR', '#STKLIV', '#TOTLIV', '#TOTARS', '#TOTMCI', '#SWAEVE', '#WATEVE', '#SWAMCI', '#WHULIV', '#MIDWHULEI', '#WBAEVE', '#WBASWA', '#SWALIV', '#CHEMCI', '#STKMUN', '#BURSUN', '#CRYLIV', '#TOTSWA', '#WHUMCI', '#MUNLIV', '#HULMIDWHU', '#SOUEVE', '#MUNMIDWHU', '#CRYLEI', '#WBALEI', '#HULEVE', '#WBAWHU', '#WBASOU', '#SOUCHE', '#WATLEI', '#SWAWHU', '#BURARS', '#CHECRY', '#HULSWA', '#SUNSTK', '#SOULIV', '#MUNWAT', '#SOUMCI', '#SUNCRY', '#ARSMIDWHU', '#MUNWHU', '#STKWAT', '#SUNMIDWHU', '#WBAHUL', '#SOUMIDWHU', '#STKWHU', '#CHELIV', '#WHUCRY', '#BURCHE', '#HULLIV', '#SOUMUN', '#HULCRY', '#TOTLEI', '#STKLEI', '#HULMCI', '#TOTMIDWHU', '#HULSTK', '#SWAARS', '#MUNLEI', '#WBAMIDWHU', '#WATMCI', '#ARSMUN', '#TOTWAT', '#WATLIV', '#CHEMUN', '#BURLIV', '#MCILIV', '#TOTEVE', '#ARSCHE', '#CRYMCI', '#CHEEVE', '#BURSTK', '#HULSUN', '#WATMIDWHU', '#WBAWAT', '#LEIEVE', '#STKMCI', '#WBACHE', '#SUNARS', '#TOTHUL', '#ARSLIV', '#SWAMUN', '#SWACRY', '#SUNMCI', '#TOTSOU', '#ARSWAT', '#WHUWAT', '#ARSCRY', '#SOUHUL', '#HULARS', '#WHULEI', '#BURWAT', '#SUNCHE', '#MIDWHUMCI', '#CHEWHU', '#TOTSTK', '#BURCRY', '#WBAARS', '#MIDWHUEVE', '#CRYEVE', '#STKMIDWHU', '#CHEWAT', '#ARSEVE', '#CHELEI', '#WBAMCI', '#SUNWAT', '#WBACRY', '#BURHUL', '#TOTMUN', '#MIDWHULIV', '#STKARS', '#STKEVE', '#HULCHE', '#SWACHE', '#SUNMUN', '#HULMUN', '#SOUSWA', '#SOUWHU', '#SOULEI', '#BURMIDWHU', '#WBAMUN', '#SUNWHU', '#TOTWHU', '#BUREVE', '#SWALEI', '#ARSWHU', '#MIDWHUCRY', '#CHEMIDWHU'])
>>>
</code></pre>