Python: convert list into dict

Question

I have a list like below

['position_Matrix position1', 'postal_code post10']

I was trying to make a dictionary based on this list and as expected below

{position_Matrix:position1, postal_code:post10}

Tried with below code and it doesn't work. Can someone help on this?

dict(map(lambda x: x.split(" "), alias.split(",")))

What does "doesn't work" mean. Please add your traceback to your post. — Morgan Thrapp, Nov 03 '15 at 17:29
Possible duplicate of [Python: List to Dictionary](http://stackoverflow.com/questions/4576115/python-list-to-dictionary) — Jean Guzman, Nov 03 '15 at 17:42

score 5 · Accepted Answer · answered Nov 03 '15 at 17:31

5

Assuming alias is your list, the issue is that you're trying to split a list. You almost had it right, just remove the split. This will work:

dict(map(lambda x: x.split(" "), alias))

answered Nov 03 '15 at 17:31

Morgan Thrapp

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`dict(x.split() for x in alias)` is likely faster if that matters in the slightest (it's somewhat inefficient to map with lambdas). – Two-Bit Alchemist Nov 03 '15 at 18:08
@Morgan Thank you Very much. This is what i am looking for – Gokul G Nov 04 '15 at 08:02

score 2 · Answer 2 · answered Nov 03 '15 at 17:51

You could also use a dict comprehension:

d = {x.split()[0]: x.split()[1] for x in some_list}
#equivalent and more efficient
d = dict(map(str.split, some_list)) # this would be my preferred solution
#another equivalent (ugly)
d = dict(zip(*[y.split() for y in x]))

Python: convert list into dict

2 Answers2