Use TypeError for non-string input in count_vowels (#14196)

yaadhuu · pre-commit-ci[bot] · MaximSmolskiy · web-flow · commit da6b9e968714 · 2026-03-09T07:57:20.000+03:00
* Use TypeError for non-string input in count_vowels * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * Fix docstring and improve input validation in kth_lexicographic_permutation * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * Update kth_lexicographic_permutation.py --------- Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com> Co-authored-by: Maxim Smolskiy <mithridatus@mail.ru>
diff --git a/strings/count_vowels.py b/strings/count_vowels.py
@@ -22,7 +22,7 @@ def count_vowels(s: str) -> int:
     1
     """
     if not isinstance(s, str):
-        raise ValueError("Input must be a string")
+        raise TypeError("Input must be a string")
 
     vowels = "aeiouAEIOU"
     return sum(1 for char in s if char in vowels)

Original file line number	Diff line number	Diff line change
`@@ -22,7 +22,7 @@ def count_vowels(s: str) -> int:`
`22`	`22`	`1`
`23`	`23`	`"""`
`24`	`24`	`if not isinstance(s, str):`
`25`		`- raise ValueError("Input must be a string")`
	`25`	`+ raise TypeError("Input must be a string")`
`26`	`26`
`27`	`27`	`vowels = "aeiouAEIOU"`
`28`	`28`	`return sum(1 for char in s if char in vowels)`