Stephen J. Turnbull wrote:
But a PEP 501 i-string "just works" nicely: load_warning = i'Load is too high: {load}' while (theres_work_to_do_matey): if load > max_load: logging.warn(load_warning) (This assumes a future version of logging.warn that calls str() on the first argument if it is an InterpolationTemplate.)
A "Why this rather than PEP 501's interpolation templates?" is the main thing I was looking for in the PEP and I didn't find it. If the proposal is just a variant on PEP 501 with the syntax changed from i"template" to \`template\` and the template type name changed from InterpolationTemplate to TemplateLiteral, it doesn't need to be a new PEP, I can just explicitly reject those spelling options in PEP 501. (The reasons for that PEP's deferral unfortunately still hold, though - eager rendering, runtime value interpolation, and dedicated templating libraries together cover enough cases that the motivation for introducing the semantic complexity of yet another templating option gets weakened dramatically). If the differences between the proposals run deeper than that, then the proposed new PEP needs to spell them out.