如何在Python中將這個列表/元組轉換到以下列表中？

Question

我有一個這樣的名單：

x = [[(u'reads_2.fq',), (u'reads_2.fq',), (u'reads_2.fq',), (u'reads_2.fq',), (u'reads_2.fq',)]] 

我想這個列表轉換成這樣：

x = ['reads_2.fq', 'reads_2.fq', 'reads_2.fq', 'reads_2.fq', 'reads_2.fq'] 

Answer 1

使用列表理解：

>>> x = [[(u'reads_2.fq',), (u'reads_2.fq',), (u'reads_2.fq',), (u'reads_2.fq',), (u'reads_2.fq',)]] 
>>> [y[0] for y in x[0]] 
[u'reads_2.fq', u'reads_2.fq', u'reads_2.fq', u'reads_2.fq', u'reads_2.fq'] 

如果內的元組包含然後使用多個項目itertools.chain.from_iterable：

>>> from itertools import chain 
>>> list(chain.from_iterable(x[0])) 
[u'reads_2.fq', u'reads_2.fq', u'reads_2.fq', u'reads_2.fq', u'reads_2.fq']