Injection by argument name

[tuukkamustonen]

I like the strong emphasis on types, but what if I have multiple instances of same type (e.g. two S3 buckets). For now I can use NewType e.g.

Bucket1 = NewType("bucket1", S3Bucket)
Bucket2 = NewType("bucket2", S3Bucket)

def foobar(bucket1: Bucket1, bucket2: Bucket2):
    pass

But it could be useful to inject by variable name so I could just:

def foobar(*, bucket1: S3Bucket, bucket2: S3Bucket):
    pass

Wouldn't have to alter the function signature, which would be sort of a side bonus.

[Tishka17]

We cannot really rely on names as they should be globally unique. We were thinking about this feature and it's hard to formalize limitations and requirements. Do you have any ideas here?

[tuukkamustonen]

If you name your args as some_very_specific_aws_bucket it's unlikely that anything else declares the same, right?

Of course if you actually used just "bucket1" and "bucket2" those might be used somewhere else, too...

No special insight or ideas.