Iterating through list of lists

Question

i have list of lists, i need via Python iterate through each string ,remove spaces (strip) and save list into new list.

E.g. original list: org = [ [' a ','b '],['c ',' d '],['e ',' f'] ]

Expecting new list: new = [ ['a','b'],['c','d'],['e','f'] ]

I started with below code, but no idea how to add stripped objects into new list of lists. new.append(item) - create simple list without inner list.

new = [] for items in org: for item in items: item= item.strip() new.append(item)

Answer 1

You can use a nested list comprehension that strips each word in each sub-list:

new = [[s.strip() for s in l] for l in org]