palindrome.py

def isPalindrome(input_string):
    
    def _string_iterator():
        _len = len(input_string)
        
        for i in xrange(_len / 2):
            yield input_string[i], input_string[_len - i - 1]
        
    for c1, c2 in _string_iterator():
        if c1 != c2:
            return False
    
    return True

f = open('terabyteFile.txt')

#http://stackoverflow.com/questions/519633/lazy-method-for-reading-big-file-in-python
def read1k():
    return f.read(1024)

print 'testing to see if all the words are palindromes'

for stream in iter(read1k, ''):
    if not isPalindrome(stream) :
        raise SystemExit('#failwhale: false')

print 'Yo dawg, I hear you like palindromes: true'

terabyteFile.txt

noon toon