Question

I am working on list comprehension in python.

l = [['200801', '100'], ['', ''], ['200802', '151'], [''], ['200805', '160'] ,['', u''], [''], [u'\xa0'], ['\r\n                       \r\n                        ', '\r\n                      '], ['200812', '50']]

I want output as

[['200801', '100'], ['200802', '151'], ['200805', '160'], ['200812', '50']]

How can I remove such uncertain inner list of variable length and extra characters?

Answer 1

Here is one approach:

>>> [x for x in l if all(y.strip() for y in x)]
[['200801', '100'], ['200802', '151'], ['200805', '160'], ['200812', '50']]

I don’t like it much though, it’s doing too much in one line.

If you could describe better what you are trying to words, you’ll find it a lot easier to describe in Python (or any other language).