Editing strings in a list of lists

Question

I\'ve made a list of lists from a text block where each list contains all the words in a line as a separate element, like this:

listoflists = [[\'Lorem\', \'ipsu         


        

Answer 1

Why don't you just do return n.strip('\n')? You can get rid of the if/else

Answer 2

listoflists = [['Lorem', 'ipsum', 'dolor', 'sit', 'amet\n'],['consectetur', 'adipiscing', 'elit', 'donec', 'iaculis\n']]
for l in listoflists:
    l[-1] = l[-1].replace('\n','')
print listoflists

""" Output:

[['Lorem', 'ipsum', 'dolor', 'sit', 'amet'], ['consectetur', 'adipiscing', 'elit', 'donec', 'iaculis']]

"""

Answer 3

Also, the reason your original code does not work is b/c n.strip('\n') does not change the value of n. It returns a new string. If you did something like n=n.strip('\n'); return n, that would work.

Answer 4

Just iterate over each list and replace the last element with the last element with the '\n' stripped.

>>> listoflists = [['Lorem', 'ipsum', 'dolor', 'sit', 'amet\n'],
               ['consectetur', 'adipiscing', 'elit', 'donec', 'iaculis\n']]
>>> for elem in listoflists:
        elem[-1] = elem[-1].strip('\n')


>>> listoflists
[['Lorem', 'ipsum', 'dolor', 'sit', 'amet'], ['consectetur', 'adipiscing', 'elit', 'donec', 'iaculis']]

EDIT - Since in the code, you seem to be stripping \n from each element you could do

>>> [[elem.strip('\n') for elem in lst] for lst in listoflists]
[['Lorem', 'ipsum', 'dolor', 'sit', 'amet'], ['consectetur', 'adipiscing', 'elit', 'donec', 'iaculis']]

Answer 5

You could use a list comprehension

listoflists = [['Lorem', 'ipsum', 'dolor', 'sit', 'amet\n'],
               ['consectetur', 'adipiscing', 'elit', 'donec', 'iaculis\n']]

[[j.replace("\n","") for j in i] for i in listoflists]

Output

[['Lorem', 'ipsum', 'dolor', 'sit', 'amet'],
 ['consectetur', 'adipiscing', 'elit', 'donec', 'iaculis']]