Lowercase the keys in a dict

Question

I have an array of dicts and I would like to lowercase the keys. Here is what I have so far:

d_lower = []
for item in d:
    item_lower = {k.lower():v for k,v in item.items()}
    d_lower.append(item_lower)

Can this be done in a single-line list-comprehension?

Isn't this the same question as in [Dictionary to lowercase in Python](https://stackoverflow.com/q/764235/4909087)? — cs95, Jan 02 '21 at 09:17
@cs95 similar, this is an array of that though. But yea, same thing. — David542, Jan 02 '21 at 09:24

score 1 · Accepted Answer · answered Jan 02 '21 at 09:12

1

Sure, though it's not necessarily any more readable:

[{k.lower():v for k,v in item.items()} for item in d]

answered Jan 02 '21 at 09:12

David542

score 0 · Answer 2 · answered Jan 02 '21 at 09:25

0

{i.lower():j for i,j in d.items()}

where d is the dict.

answered Jan 02 '21 at 09:25

Mike Smith

2 Answers2