What is a Palindrome?
A palindrome is a sequence of characters which reads the same backward or forward.
For example dad, mom, kayak, a santa at nasa, anna.
Not palindromes: mario, luigi, ice cream.
There is more than one way in python to check whether given string is palindrome or not. Let’s have a look.
def is_palindrome(): return my_str == my_str[::-1]
defiantly one of the shortest ways to do it.
[::-1] taking care of inverting the string and all is left is simply compare between the original to inverted string.
The following way is slower than the first method
def is_palindrome(): return my_str == ''.join(reversed(my_str))
My least favorite but quite common (especially in other languages)
def is_palindrome(): for i in xrange(0, len(my_str)/2): if my_str[i] != my_str[len(my_str)-i-1]: return False return True
How to handle case-sensitive palindrome?
You can use upper() when comparing the reversed and the original strings.