palindrome-number

Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward.

Example 1:

Input: 121
Output: true
Example 2:

Input: -121
Output: false
Explanation: From left to right, it reads -121. From right to left, it becomes 121-. Therefore it is not a palindrome.
Example 3:

Input: 10
Output: false
Explanation: Reads 01 from right to left. Therefore it is not a palindrome.

My code:
class Solution:
    def isPalindrome(self, x):
        """
        :type x: int
        :rtype: bool
        """
        if x<0:
            return False
        if x==0:
            return True
        tmp_list=[]
        while x!=0:
            result=x%10
            x=(x-result)/10
            tmp_list.append(result)
        
        for i in range(len(tmp_list)):
            index=len(tmp_list)-i-1
            if tmp_list[i]!=tmp_list[index]:
                return False
        return True
            
Solution:
https://leetcode.com/problems/palindrome-number/