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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 load(cls, path):
 """Load Waveform from file."""

        assert os.path.exists(path), "No such file: %r" % path

        (folder, filename) = os.path.split(path)
        (name, extension) = os.path.splitext(filename)

        wave = Waveform(None)
        wave._path = path
        return wave