Matching Multiple Loop Variables

[Abhiram98]

I would like to match loop iterators in into separate meta variables.

For example, in the below code, I would like to match both 'i' and 'j' into separate meta variables.

for i,j in array:
    print(i+j)

Here is my unsuccessful attempt in the playground.

Thanks in advance for your help!

Edit: Seems like the pattern syntax works but the template syntax doesn't?

[HerringtonDarkholme]

I'm not too sure about your question but looks like this can work?

https://ast-grep.github.io/playground.html#eyJtb2RlIjoiUGF0Y2giLCJsYW5nIjoicHl0aG9uIiwicXVlcnkiOiJmb3IgJEksICRKIGluICRBUlI6ICQkJCIsInJld3JpdGUiOiIiLCJjb25maWciOiJydWxlOlxuICBraW5kOiBmb3Jfc3RhdGVtZW50XG4gIGFsbDpcbiAgICAtIGhhczpcbiAgICAgICAgZmllbGQ6IGxlZnRcbiAgICAgICAgcGF0dGVybjogJEksJEpcbiAgICAtIGhhczpcbiAgICAgICAgZmllbGQ6IGJvZHlcbiAgICAgICAgcGF0dGVybjogcHJpbnQoJEkrJEopIiwic291cmNlIjoiZm9yIGksaiBpbiBhcnI6XG4gICAgcHJpbnQoaStqKSJ9

In YAML rule,

https://ast-grep.github.io/playground.html#eyJtb2RlIjoiQ29uZmlnIiwibGFuZyI6InB5dGhvbiIsInF1ZXJ5IjoiZm9yICRJLCAkSiBpbiAkQVJSOiAkJCQiLCJyZXdyaXRlIjoiIiwiY29uZmlnIjoicnVsZTpcbiAgcGF0dGVybjogJ2ZvciAkSSwgJEogaW4gJEFSUjogJCQkJyIsInNvdXJjZSI6ImZvciBpLGogaW4gYXJyOlxuICAgIHByaW50KGkraikifQ==

[Abhiram98]

Thanks!

Is there a way I could use this kind of syntax? I'm looking to build a more complex rule on top of this

[HerringtonDarkholme]

I think the issue is in the pattern part.
$I, $J is not parsed as pattern list. You can try for $I, $J in []: $$$ and selector.

[HerringtonDarkholme]

https://ast-grep.github.io/playground.html#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

this should work

[Abhiram98]

Thanks! That's exactly what I needed