#!/usr/bin/env python3
# Author ID: zrui

def is_digits(sobj: str) -> bool:
    # place code here - loop through each character in sobj
    #   try:
#               int(sobj)
#               return True
#       except ValueError:
#               return False
        for char in sobj:
                if bool(char.isdigit())==False:
                        return False;
        return True;

if __name__ == '__main__':
        test_list = ['x1234','12x34','1234','1234x','xxxxx']
        for item in test_list:
                if is_digits(item) == True:
                        print(item, ' is an integer.')
                else:
                        print(item, ' is not an integer.')