CODEWITHSUNDEEP
pythonrecursionbuilt-in
terriyon
terriyon

Reputation: 117

I am using recursion to test whether not a word is a palindrome. A palindrome is a word that is the same backward ex: race car

Why am I getting an error builtin_function_function_or_method object is not subscriptable and how can i make a string into a list so I can index into the string?

s = input("Please enter a word: ")
s = s.lower
Pal = True
def recpal(s):
    if Pal == False:
        return(False)
    else:
        return(True)

def main():
    y = recpal(s)
    first_char = 0
    last_char = -1
    if s[first_char] != s[last_char]:
        print("It is not a Palindrome")
    i = 0
    while i >= n[-1]:
        first_char = first_char + 1
        last_char = last_char -1</i>





main()

Upvotes: 2

Views: 67

Answers (2)

Brian
Brian

Reputation: 2242

You mean to do, in line 2:

s = s.lower()

There are more problems after that, but the specific problem you are having is that you are not calling the function (you need the parentheses).

Upvotes: 1

kindall
kindall

Reputation: 184405

The culprit is this line:

s = s.lower

Here you are assigning the method (or function) s.lower to s, overwriting the original string. At this point you have lost what the user typed in. You get the error because you can't use the [] notation with a function, which you try to do with e.g. s[first_char].

More than likely you intended to call the function and keep its return value, a lower-case value of the original string, in s:

s = s.lower()

There are many other problems with your code but that is the one that's causing the error.

Upvotes: 1

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