Another way this could go: If PEP 634 (pattern matching, reborn) gets
accepted, a future Python version could add f-string patterns (which the
PEP currently forbids). E.g.
```
x = "123 456 789"
match x:
case f"{a} {b}": print("A pair:", a, b)
case f"{a} {b} {c}": print("Triple", a, b, c)
```
Everything else (e.g. how to design the formatting language) would be open.
We could even designate "raw" f-strings (rf"...") as regular expressions
(<wink 0.5>).
--
--Guido van Rossum (python.org/~guido)
*Pronouns: he/him **(why is my pronoun here?)*
<http://feministing.com/2015/02/03/how-using-they-as-a-singular-pronoun-can-change-the-world/>
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