How to convert this list to desired format in Python?

Question

I have a list like this:

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

Desired output:

['reads.fq', 'README.txt']

Where did you run into problems while trying to do this? – jprofitt Jul 03 '13 at 05:49 — jprofitt, Jul 03 '13 at 05:49
Whats the error you are getting? what have you tried? – Jack Daniel's Jul 03 '13 at 05:50 — Jack Daniel's, Jul 03 '13 at 05:50

TerryA · Accepted Answer · 2013-07-03T06:02:11.670

0

With a list comprehension:

>>> [a for b in x for c in b for a in c]
[u'reads_2.fq', u'README.txt']

Or if you're using Python 2.7 (note that the compiler module is deprecated, and is not available in python 3):

>>> from compiler.ast import flatten
>>> flatten(x)
[u'reads_2.fq', u'README.txt']

edited Jul 03 '13 at 06:02

answered Jul 03 '13 at 05:55

TerryA

score 0 · Answer 2 · answered Jul 03 '13 at 06:13

0

You can try this:

>>> y = []
>>> for a in x:
...     if a:
...         y.append(a[0][0])
...
>>> y
[u'reads_2.fq', u'README.txt']

answered Jul 03 '13 at 06:13

nazia

2 Answers2