Most of my use cases for string interpolation doesn't involve the concept of templates, so for me embedding the "data" inside the "template" is easier to read most of the time. Perhaps it's because the data and the "slots inside the template" are colocated? I had prefered keywords when `str.format` expression gets long anyway, so I guess I might not be the best person to judge.

I understand this. Some part of me also resisted them until I worked out that, if used consistently, they _entirely_ eliminate format string bugs (of the "a user-supplied string contains string formatting characters" variety). And then I was a convert!

For true "template" cases, I still use Template Strings (https://docs.python.org/3/library/string.html#template-strin...)