List of Strings to Strings

Question

How can I turn this

list = [['I','am','a','hero'],['What','time','is','it']]

to this

list = [["I am a hero"],["What time is it"]]

This doesn't work:

list(chain.from_iterable(list.str.split(',')))

And neither does:

[a for a in list]

Your expected result contains bunch of syntax errors. Also I do not recommend you to use `list` or any other name which shadowing built in functions/classes. — Olvin Roght, Dec 14 '20 at 15:47
`[I am a hero]` is not valid Python. Did you mean `['I am a hero']`? — John Gordon, Dec 14 '20 at 15:48

JacksonPro · Answer 1 · 2020-12-14T15:51:57.553

2

Here is one way of doing it

lst = [['I','am','a','hero'],['What','time','is','it']]

new_list = [[' '.join(x)] for x in lst]
print(new_list)

edited Dec 14 '20 at 15:51

answered Dec 14 '20 at 15:49

JacksonPro

score 2 · Accepted Answer · 2020-12-14T15:51:36.443

2

You could join the list items:

list1 = [['I', 'am', 'a', 'hero'], ['What', 'time', 'is', 'it']]
list2 = [[' '.join(item)] for item in list1]
print(list2)

Output:

[['I am a hero'], ['What time is it']]

edited Dec 14 '20 at 15:51

answered Dec 14 '20 at 15:49

Oh? Apologies for the poor vocab. Any resources where I can read further? @wjandrea – Yaakov Bressler Dec 14 '20 at 16:10
2

@YaakovBressler, it's more nitpicking, don't take it seriously. Collision is just not right word. – Olvin Roght Dec 14 '20 at 16:15
Ah. Simple Wikipedia search provides clarity. @OlvinRoght – Yaakov Bressler Dec 14 '20 at 16:19
1

@Yaakov No problem! You've got the right idea. I'm not aware of any resources specifically talking about collision (I don't think Python even has collision), but for shadowing, see [this answer](https://stackoverflow.com/a/53734745/4518341) for a quick overview and [Wikipedia](https://en.wikipedia.org/wiki/Variable_shadowing) for a more technical definition, plus read about scope: [Short description of the scoping rules?](https://stackoverflow.com/q/291978/4518341) – wjandrea Dec 14 '20 at 16:28

2 Answers2