How to remove spaces from list of lists in Python?

Question

I have the following input:

[ ['A(x) | B(x)'],['Function(x,y) | K(x)'] ]

Each list within the list of list has a space before and after the character "|". How can I remove this to get the following result?

[ ['A(x)|B(x)'],['Function(x,y)|K(x)'] ]

I tried the following:

list=[]
k1=[]
for i in sentence:
    k1="".join(i).replace(" ","")
    list.append(k1)

result=[[i] for i in list]

@coldspeed It's a nested list of strings, of course it's possible for those strings to have whitespace. — roganjosh, Nov 20 '17 at 06:01
@roganjosh Did I misread? Their initial post mentioned white space after "[", which misled me. — cs95, Nov 20 '17 at 06:03
`[re.sub(r'\s+\|\s+', '|', s) for s in input]` for any number of whitespace and only around `'|'` — user2390182, Nov 20 '17 at 06:20

score 0 · Accepted Answer · answered Nov 20 '17 at 06:11

0

Try this:

>>> a_list = [['A(x) | B(x)'], ['Function(x,y) | K(x)']]
>>> result = [[''.join(''.join(sub).split())] for sub in a_list]
>>> result
[['A(x)|B(x)'], ['Function(x,y)|K(x)']]

answered Nov 20 '17 at 06:11

srikavineehari

2,502
1
11
21

1

Perfect. Thank you! – Gayathri Ravi Nov 20 '17 at 06:12

How to remove spaces from list of lists in Python?

1 Answers1