Palindrome code

#palindrome code in python
def inner():
    a=input("Enter the number:")
    b=a[::-1]
    if int(a) <= 0:
        print("Enter again... ")
    else:
        c=str(int(a)+int(b))
        d=''
        d=d+c

        for i in range(1000):
            print("Reverse number is :", b)
            if a==b:
                print("Number is :", a)
                print("Reverse number is :", a[::-1])
                print(a,"is palindrome")
                break
            else:
                if d==d[::-1]:
                    print("Number is :",d)
                    print("Reverse number is :", d[::-1])
                    print(d,"is palindrome")
                    break

                else:
                    print("Number is :",d)
                    print("Reverse number is :", d[::-1])
                    d=str(int(d)+int(d[::-1]))
                    print("Number is :",d)
                    print("Reverse number is :",d)
            d=d

    print("\nDo you want to enter again\n1)yes\n2)no")
    inp = input("Enter yes or no :")
    if inp=="yes":
        res=inner()

    else:
        print("Thank you...")
    return inner
res=inner()