How can you put dict and get method inside an f-string?

Question

I have this dictionary that I want to embed inside an f-string to shorten up my code (for golfing purposes). Is there any way to include the braces inside the f-string braces?

# what I have:
i=2
a={1:'a',2:'b',3:'c'}.get(i,'g')
b=f'{a} is the letter'

# what I want to do but get a syntax error:
b=f'{{1:'a',2:'b',3:'c'}.get(i,'g')} is the letter'

# desired output:
'b is the letter'

I can't swap out the {}.get notation for the dict().get because my keys are numbers (unless there's a hack to adjust that but it probably will end up being more characters than I have already).

Thanks in advance.

```f"{dict([(1, 'a'), (2, 'b'), (3, 'c')]).get(i, 'g')} is the letter"``` — Henry Tjhia, Nov 20 '20 at 23:52

Random Davis · Accepted Answer · 2020-11-23T16:19:11.530

2

One, you have to use different quote types on your string, otherwise the quotes inside the dict literal will mess things up. Secondly, you just have to add a space around the dictionary literal and the .get():

b=f"{ {1:'a',2:'b',3:'c'}.get(i,'g') } is the letter"

Source for adding the spaces: this answer.

edited Nov 23 '20 at 16:19

answered Nov 20 '20 at 23:47

Random Davis

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_Why_ do you have to add the extra spaces? – martineau Nov 21 '20 at 00:06
@martineau great question, if I could explain it I would have. – Random Davis Nov 23 '20 at 16:19
Actually I think the question the answer you added the link to explains it: "…double brackets result in literal brackets in the output…", i.e. it's just how f-strings are parsed. – martineau Nov 23 '20 at 18:23

How can you put dict and get method inside an f-string?

1 Answers1