Analyzing Python digital palindromic (string achieve transfer, does not turn the string implementation)

Judgment Python digital palindrome, the palindrome returns True, non-palindromic returns False, only a single-digit returns True.

In which a train of thought, convert a number to a string, and then contrast with the reverse, but requires extra space overhead to create a string. Implementation:

def isPalindrome(x):
    """
    :type x: int
    :rtype: bool
    """
    str_x = str(x)
    if len(str_x) == 0:
        print("Input {0} is invalid.".format(x))
        return False
    return str_x == str_x[::-1]


if __name__ == '__main__':
    input_str = input("Please input one number:")
    try:
        x = int(input_str)
        print(isPalindrome(x))
    except ValueError:
        print("Input {0} is invalid.".format(input_str))