Computer Science · Python String Slicing
Identify the logical truth regarding the following palindrome check expression in Python: def is_palindrome(s): return s == s[-1::-1]
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1It only works correctly for odd-length strings.
- 2It will raise an IndexError on empty strings.
- 3The slice syntax s[-1::-1] is valid, equivalent to s[::-1], and correctly reverses the string, so there is no logical error.✓
- 4The slice syntax is incorrect; it should strictly be s[::-1].
Correct answer
The slice syntax s[-1::-1] is valid, equivalent to s[::-1], and correctly reverses the string, so there is no logical error.
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