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The following list comprehension worked when I tried it: [num for num in hand if num != 11] But this doesn't work: [num for num in hand if num != 11 else 22] It gives a SyntaxError, highlightin...
#3: Post edited
by
Karl Knechtel
·
2023-10-20T05:28:17Z (about 1 year ago)
Explicitly indicate the error; rephrase slightly for clarity
Why are list comprehensions written differently if you use `else`?
- The following list comprehension worked when I tried it:
- `[num for num in hand if num != 11]`
- But this doesn't work:
- `[num for num in hand if num != 11 else 22]`
which led me to believe that you can't use else in a list comprehension. However, it seems that you can, but it has to be written differently. This works:- `[num if num != 11 else 22 for num in hand]`
Why does the `if` need to be placed earlier in the comprehension if you use `else` with it?
- The following list comprehension worked when I tried it:
- `[num for num in hand if num != 11]`
- But this doesn't work:
- `[num for num in hand if num != 11 else 22]`
- It gives a `SyntaxError`, highlighting the `else`.
- This led me to believe that you can't use else in a list comprehension. However, I then discovered that this is possible instead:
- `[num if num != 11 else 22 for num in hand]`
- Why does the `if` need to be placed earlier in the comprehension in order to include a matching `else`?
#2: Nominated for promotion
by
Alexei
·
2022-02-13T11:40:57Z (almost 3 years ago)
#1: Initial revision
by
true_blue
·
2021-11-18T02:07:57Z (about 3 years ago)
Why are list comprehensions written differently if you use `else`?
The following list comprehension worked when I tried it: `[num for num in hand if num != 11]` But this doesn't work: `[num for num in hand if num != 11 else 22]` which led me to believe that you can't use else in a list comprehension. However, it seems that you can, but it has to be written differently. This works: `[num if num != 11 else 22 for num in hand]` Why does the `if` need to be placed earlier in the comprehension if you use `else` with it?