BUG: Refactor error message formatting in Index class for clarity

whyvineet · whyvineet · commit 703085e3f1b3 · 2025-08-26T00:32:07.000+05:30
diff --git a/pandas/core/indexes/base.py b/pandas/core/indexes/base.py
@@ -2112,7 +2112,7 @@ def _validate_index_level(self, level) -> None:
                 return
             if level < 0 and level != -1:
                 raise IndexError(
-                    "Too many levels: Index has only 1 level, not {}".format(level + 1)
+                    f"Too many levels: Index has only 1 level, not {level + 1}"
                 )
             return
 

Original file line number	Diff line number	Diff line change
`@@ -2112,7 +2112,7 @@ def _validate_index_level(self, level) -> None:`
`2112`	`2112`	`return`
`2113`	`2113`	`if level < 0 and level != -1:`
`2114`	`2114`	`raise IndexError(`
`2115`		`- "Too many levels: Index has only 1 level, not {}".format(level + 1)`
	`2115`	`+ f"Too many levels: Index has only 1 level, not {level + 1}"`
`2116`	`2116`	`)`
`2117`	`2117`	`return`
`2118`	`2118`