1 | #!/usr/bin/env python2
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2 | """
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3 | unicode.py
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4 | """
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5 | from __future__ import print_function
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6 |
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7 | import re
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8 | import sys
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9 |
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10 |
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11 | def main(argv):
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12 | decode = False
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13 | if argv[1] == 'unicode':
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14 | print('palindrome.py: unicode', file=sys.stderr)
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15 | decode = True
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16 |
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17 | for line in sys.stdin:
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18 | line = line.rstrip() # remove newlines and spaces
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19 |
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20 | if len(line) == 0: # skip blank lines
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21 | continue
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22 |
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23 | if decode:
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24 | seq = line.decode('utf-8')
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25 | else:
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26 | seq = line
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27 |
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28 | n = len(seq)
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29 |
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30 | h = n // 2 # floor division
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31 |
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32 | #print('n = %d, h = %d' % (n, h))
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33 |
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34 | palindrome = True
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35 | for i in xrange(h):
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36 | if seq[i] != seq[n-1-i]:
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37 | palindrome = False
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38 | break
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39 |
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40 | if palindrome:
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41 | print(line)
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42 |
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43 |
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44 | if __name__ == '__main__':
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45 | try:
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46 | main(sys.argv)
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47 | except RuntimeError as e:
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48 | print('FATAL: %s' % e, file=sys.stderr)
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49 | sys.exit(1)
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