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<pre>
def is_palindrome(s):
    """ (str) -> bool

    Return True if and only if s is a palindrome.

    >>> is_palindrome('noon')
    True
    >>> is_palindrome('racecar')
    True
    >>> is_palindrome('dented')
    False
    """
</pre>
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	<p>
		Because the function returns a Boolean value, we need <i>at least</i> 2 test cases: one that returns <code>True</code> and one that returns <code>False</code>. In th