Palindromes function does not work

Question

This is what I have so far. What should I do to get this to work?

def num_pal(nums):
    for x in nums: 
        w=

def pals(x):
    pos=0
    pos1=-1
    for n in x:
        if n[pos]==n[pos1]:
            pos=pos+1
            pos1=pos1-1
            return'true'
        else:
            return'false'

Answer 1

You might try this function:

def is_palindrome(text):
    return text[:len(text)//2] == text[:(len(text)-1)//2:-1]

Here is example usage for reference:

>>> is_palindrome('')
True
>>> is_palindrome('a')
True
>>> is_palindrome('b')
True
>>> is_palindrome('aa')
True
>>> is_palindrome('ab')
False
>>> is_palindrome('ba')
False
>>> is_palindrome('bb')
True
>>> is_palindrome('aaa')
True
>>> is_palindrome('aab')
False
>>> is_palindrome('aba')
True