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Asked by Pallavi Last Modified
Answer 
Michael Devine
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By reversing, the rhs will return the reverse of the string.
>>> s='malayalam'
>>> 'is a palindrome' if s==s[::-1] else 'not a palindrome'
'is a palindrome'
>>>
>>> s=input('enter a string... ')
enter a string... racecar
>>> 'is a palindrome' if s==s[::-1] else 'not a palindrome'
'is a palindrome'
>>> s=input('enter a string... ')
enter a string... a string
>>> 'is a palindrome' if s==s[::-1] else 'not a palindrome'
'not a palindrome'
>>>
_______________________________________________________________________________
Otherwise, you can check each character in the string read from the front against each character read from the back..
>>> s='malayalam'
>>> for i in range(len(s)):
if s[i]!=s[-(i+1)]:
'not a palindrome'
break
else: None
else: 'is a palindrome'
'is a palindrome'
>>> s='rotor'
>>> for i in range(len(s)):
if s[i]!=s[-(i+1)]:
'not a palindrome'
break
else: None
else: 'is a palindrome'
'is a palindrome'
>>> s='qwerty'
>>> for i in range(len(s)):
if s[i]!=s[-(i+1)]:
'not a palindrome'
break
else: None
else: 'is a palindrome
'not a palindrome'
>>>
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