From 4f8fa3c44a29cafaed64a73588a309e88d1f3ded Mon Sep 17 00:00:00 2001
From: Md Mahiuddin <68785084+mahiuddin-dev@users.noreply.github.com>
Date: Tue, 10 Oct 2023 10:19:40 +0600
Subject: [PATCH] TypeError for non-integer input  (#9250)

* type error check

* remove str input

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
---
 maths/number_of_digits.py | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/maths/number_of_digits.py b/maths/number_of_digits.py
index 86bc67f72..bb9c0d248 100644
--- a/maths/number_of_digits.py
+++ b/maths/number_of_digits.py
@@ -16,7 +16,15 @@ def num_digits(n: int) -> int:
     1
     >>> num_digits(-123456)
     6
+    >>> num_digits('123')  # Raises a TypeError for non-integer input
+    Traceback (most recent call last):
+        ...
+    TypeError: Input must be an integer
     """
+
+    if not isinstance(n, int):
+        raise TypeError("Input must be an integer")
+
     digits = 0
     n = abs(n)
     while True:
@@ -42,7 +50,15 @@ def num_digits_fast(n: int) -> int:
     1
     >>> num_digits_fast(-123456)
     6
+    >>> num_digits('123')  # Raises a TypeError for non-integer input
+    Traceback (most recent call last):
+        ...
+    TypeError: Input must be an integer
     """
+
+    if not isinstance(n, int):
+        raise TypeError("Input must be an integer")
+
     return 1 if n == 0 else math.floor(math.log(abs(n), 10) + 1)
 
 
@@ -61,7 +77,15 @@ def num_digits_faster(n: int) -> int:
     1
     >>> num_digits_faster(-123456)
     6
+    >>> num_digits('123')  # Raises a TypeError for non-integer input
+    Traceback (most recent call last):
+        ...
+    TypeError: Input must be an integer
     """
+
+    if not isinstance(n, int):
+        raise TypeError("Input must be an integer")
+
     return len(str(abs(n)))