如果您确实要蛮力，请尝试此操作，但这将花费您大量的时间：
your_list = 'abcdefghijklmnopqrstuvwxyz'
complete_list = []
for current in xrange(10):
a = [i for i in your_list]
for y in xrange(current):
a = [x+i for i in your_list for x in a]
complete_list = complete_list+a
在一个较小的示例中，list =’ab’，而我们仅上升到5，将显示以下内容：
['a', 'b', 'aa', 'ba', 'ab', 'bb', 'aaa', 'baa', 'aba', 'bba', 'aab', 'bab', 'abb', 'bbb', 'aaaa', 'baaa', 'abaa', 'bbaa', 'aaba', 'baba', 'abba', 'bbba', 'aaab', 'baab', 'abab', 'bbab', 'aabb', 'babb', 'abbb', 'bbbb', 'aaaaa', 'baaaa', 'abaaa', 'bbaaa', 'aabaa', 'babaa', 'abbaa', 'bbbaa', 'aaaba','baaba', 'ababa', 'bbaba', 'aabba', 'babba', 'abbba', 'bbbba', 'aaaab', 'baaab', 'abaab', 'bbaab', 'aabab', 'babab', 'abbab', 'bbbab', 'aaabb', 'baabb', 'ababb', 'bbabb', 'aabbb', 'babbb', 'abbbb', 'bbbbb']
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