What about using string prefix 'f'?
f"{foo} and {bar}" % something == "{foo} and {bar}.format(something)
s = f"{foo}"
t = "%(bar)s"
s + t # raises Exception
Transition plan:
n: Just add F prefix. And adding "format_string" in future.
n+1: deprecate __mod__() without 'F'.
n+2: libraries use .format() and deprecate __mod__() with 'F'
n+3: remove __mod__()
--
Naoki INADA <songofaca...@gmail.com>
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