Use TypeError for non-string input in count_vowels

yaadhuu · yaadhuu · commit 435f37f5b13b · 2026-01-23T00:54:58.000+05:30
diff --git a/strings/count_vowels.py b/strings/count_vowels.py
@@ -22,7 +22,8 @@ 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 +22,8 @@ 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`	`28`	`vowels = "aeiouAEIOU"`
`28`	`29`	`return sum(1 for char in s if char in vowels)`