HQ9Plus.py

# あああ
import StringIO

class HQ9Plus(object):
    def __init__(self, src):

        self._src = src
        self._count = 0

    def run(self):
        _output = StringIO.StringIO()
        
        for str in self._src:
            if str == "H":
                _output.write(self._hello())
            elif str == "Q":
                _output.write(self._print_source())
            elif str == "9":
                _output.write(self._print_99_bottles_of_beer())
            elif str == "+":
                _output.write(self._increment())
            else:
                _output.write("some error occured")
        rtn =  _output.getvalue()
        _output.close()
        return rtn
    
    def _hello(self):
        return "Hello, world\n"
    
    def _print_source(self):
        return self._src + "\n"

    def _print_99_bottles_of_beer(self):

        _output = StringIO.StringIO()
        
        for i in reversed(range(1,100)):
            if i == 0:
                before = "no more bottles"
                after  = "99 bottles"
            elif i == 1 :
                before = "1 bottle"
                after  = "no more bottles"
            else:
                before = "%d bottles" % (i)
                after  = "%d bottles" % (i - 1)

            if i == 0:
                action = "Go to the store and buy some more"
            else :
                action = "Take one down and pass it around"

            _output.write("%s of beer on the wall. %s of beer.\n" % (before, before))
            _output.write("%s, %s of beer on the wall.\n" % (action, after))
            _output.write("\n")
        
        rtn = _output.getvalue()
        _output.close()
        
        return rtn
            
    def _increment(self):
        self._count += 1

if __name__ == '__main__':
    print HQ9Plus("HQ9+Q").run()