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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def open(self):
 """ Open the data file. """


        if not os.path.exists(self.path):
            raise IOError("No such path: {0}".format(self.path))


        with open(self.path, "rb") as f:
            msg = f.read()
        result = chardet.detect(msg)

        self.buffer = codecs.open(self.path, "rb", encoding=result['encoding'])

        self.at_eof = False