How to split strings in an array into two new arrays

user_13899435 0
Viewed 1308

I would like to be able to make an array like list1 = ['a/b','c/d','e/f'] into list2= ['a','c','e'] and list3 = ['b','d','f'].

list python string
4 Answers

I would do it this way:

list1 = ['a/b','c/d','e/f']

list2, list3 = map(list, zip(*(x.split('/') for x in list1)))
print(list2, list3)
# ['a', 'c', 'e'] ['b', 'd', 'f']

What you do is to create a generator that yields a tuple consisting of the strings left and right of the / char, respectively. Then use zip() to unfold these into the tuples consisting of the first and second elements, respectively. Finally, map() is used to convert the tuples returned by zip() into lists.

user_129959590 
[b[0] for b in [a.split('/') for a in list1]]
['a', 'c', 'e']

[b[1] for b in [a.split('/') for a in list1]]
['b', 'd', 'f']
user_5328190

In one line :

list1 = ['a/b','c/d','e/f']
list2, list3 = [x.split('/')[0] for x in list1], [x.split('/')[1] for x in list1]
user_76525440 
 l2 = []
 l3 = []
 l1 = ['a/b','c/d','e/f']
 for item in l1:
        item1, item2 = item.split("/")
        l2.append(item1)
        l3.append(item2)
user_95893870
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