Rename is_palindrome.py to is_int_palindrome.py (#8768)

* Rename is_palindrome.py to is_int_palindrome.py

* updating DIRECTORY.md

---------

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

Author: cclauss

DIRECTORY.md

@@ -577,8 +577,8 @@
   * [Hardy Ramanujanalgo](maths/hardy_ramanujanalgo.py)
   * [Hexagonal Number](maths/hexagonal_number.py)
   * [Integration By Simpson Approx](maths/integration_by_simpson_approx.py)
+  * [Is Int Palindrome](maths/is_int_palindrome.py)
   * [Is Ip V4 Address Valid](maths/is_ip_v4_address_valid.py)
-  * [Is Palindrome](maths/is_palindrome.py)
   * [Is Square Free](maths/is_square_free.py)
   * [Jaccard Similarity](maths/jaccard_similarity.py)
   * [Juggler Sequence](maths/juggler_sequence.py)

maths/is_palindrome.py maths/is_int_palindrome.py

@@ -1,19 +1,19 @@
-def is_palindrome(num: int) -> bool:
+def is_int_palindrome(num: int) -> bool:
     """
     Returns whether `num` is a palindrome or not
     (see for reference https://en.wikipedia.org/wiki/Palindromic_number).
 
-    >>> is_palindrome(-121)
+    >>> is_int_palindrome(-121)
     False
-    >>> is_palindrome(0)
+    >>> is_int_palindrome(0)
     True
-    >>> is_palindrome(10)
+    >>> is_int_palindrome(10)
     False
-    >>> is_palindrome(11)
+    >>> is_int_palindrome(11)
     True
-    >>> is_palindrome(101)
+    >>> is_int_palindrome(101)
     True
-    >>> is_palindrome(120)
+    >>> is_int_palindrome(120)
     False
     """
     if num < 0: