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> An early version of this PEP proposed that interpolations should be lazily evaluated. [...] This was rejected for several reasons [...]

Bummer. This could have been so useful:

    statement_endpoint: Final = "/api/v2/accounts/{iban}/statement"

(Though str.format isn’t really that bad here either.)

▲ nhumrich 9 days ago | parent | next [-]

There was a very very long discussion on this point alone, and there are a lot of weird edge cases, and led to weird syntax things. The high level idea was to defer lazy eval to a later PEP if its still needed enough.

There are a lot of existing workarounds in the discussions if you are interested enough in using it, such as using lambdas and t-strings together.

▲ LordShredda 9 days ago | parent | prev | next [-]

Would be useful in that exact case, but would be an absolute nightmare to debug, on par with using global variables as function inputs

	▲	notpushkin 9 days ago \| parent [-]
		Yeah, to be honest, every time this comes to mind I think “wow, this would be really neat!”, then realize just using .format() explicitly is way easier to read.

▲ o11c 9 days ago | parent | prev [-]

I do think that people are far too hesitant to bind member functions sometimes:

  statement_endpoint: Final = "/api/v2/accounts/{iban}/statement".format

(it's likely that typecheckers suck at this like they suck at everything else though)