[clang] [clang][Python] Use fstrings instead of string concatenations (PR #173861)

[via cfe-commits]

================
@@ -3060,15 +3048,15 @@ def __str__(self) -> str:
             return self.name
 
         def __repr__(self) -> str:
-            return "<ChunkKind: %s>" % self
+            return f"<ChunkKind: {self}>"
 
     def __init__(self, completionString: CObjP, key: int):
         self.cs = completionString
         self.key = key
         self.__kindNumberCache = -1
 
     def __repr__(self) -> str:
-        return "{'" + self.spelling + "', " + str(self.kind) + "}"
+        return f"{{'{self.spelling}', {self.kind}}}"
----------------
mikomikotaishi wrote:

These are for escaping the curly brace character.

https://github.com/llvm/llvm-project/pull/173861