html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,issue,performed_via_github_app
https://github.com/simonw/sqlite-utils/issues/420#issuecomment-1078315922,https://api.github.com/repos/simonw/sqlite-utils/issues/420,1078315922,IC_kwDOCGYnMM5ARcuS,9599,2022-03-24T21:09:27Z,2022-03-24T21:09:27Z,OWNER,"Yeah, this is WAY harder than it should be.

There's a clumsy workaround you could use which looks something like this: create a file `my_enchant.py` containing:

```python
import enchant
d = enchant.Dict(""en_US"")

def check(word):
    return d.check(word)
```
Then run `sqlite-utils` like this:

```
PYTHONPATH=. cat items.json | jq '.data' | sqlite-utils insert listings.db listings - --convert 'my_enchant.check(value)' --import my_enchant
```
Except I tried that and it doesn't work! I don't know the right pattern for getting `--import` to work with modules in the same directory.

So yeah, this is definitely a big feature gap.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1178546862,
https://github.com/simonw/sqlite-utils/issues/420#issuecomment-1078322301,https://api.github.com/repos/simonw/sqlite-utils/issues/420,1078322301,IC_kwDOCGYnMM5AReR9,9599,2022-03-24T21:10:52Z,2022-03-24T21:10:52Z,OWNER,"I can think of three ways forward:

- Figure out a pattern that gets that local file import workaround to work
- Add another option such as `--convert-init` that lets you pass code that will be executed once at the start
- Come up with a pattern where the `--convert` code can run some initialization code and then return a function which will be called against each value

I quite like the idea of that third option - I'm going to prototype it and see if I can work something out.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1178546862,
https://github.com/simonw/sqlite-utils/issues/420#issuecomment-1078328774,https://api.github.com/repos/simonw/sqlite-utils/issues/420,1078328774,IC_kwDOCGYnMM5ARf3G,9599,2022-03-24T21:12:33Z,2022-03-24T21:12:33Z,OWNER,"Here's how the `_compile_code()` mechanism works at the moment: https://github.com/simonw/sqlite-utils/blob/396f80fcc60da8dd844577114f7920830a2e5403/sqlite_utils/utils.py#L308-L342

At the end it does this:
```python
    return locals[""fn""]
```
So it's already building and then returning a function.

The question is if there's a sensible way to allow people to further customize that function by executing some code first, in a way that's easy to explain.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1178546862,
https://github.com/simonw/sqlite-utils/issues/420#issuecomment-1078343231,https://api.github.com/repos/simonw/sqlite-utils/issues/420,1078343231,IC_kwDOCGYnMM5ARjY_,9599,2022-03-24T21:16:10Z,2022-03-24T21:17:20Z,OWNER,"Aha! This may be possible already: https://github.com/simonw/sqlite-utils/blob/396f80fcc60da8dd844577114f7920830a2e5403/sqlite_utils/utils.py#L311-L316

And yes, this does indeed work - you can do something like this:

```
echo '{""name"": ""harry""}' | sqlite-utils insert db.db people - --convert '
import time
# Simulate something expensive
time.sleep(1)

def convert(row):
    row[""upper""] = row[""name""].upper()
'
```
And after running that:
```
sqlite-utils dump db.db 
BEGIN TRANSACTION;
CREATE TABLE [people] (
   [name] TEXT,
   [upper] TEXT
);
INSERT INTO ""people"" VALUES('harry','HARRY');
COMMIT;
```
So this is a documentation issue - there's a trick for it but I didn't know what the trick was!","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1178546862,