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当我阅读wsgiref(0.1版)的源代码时,包含两个函数的SimpleHandler类让我感到困惑。我认为并且是多余的。当我评论它时,它似乎仍然有效。那么为什么会这样写呢?_write_flushself._write = self.stdout.writeself._flush = self.stdout.flush

def _write(self,data):
    self.stdout.write(data)
    self._write = self.stdout.write

def _flush(self):
    self.stdout.flush()
    self._flush = self.stdout.flush
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