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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 read_frames(self, nframes, dtype=np.float64):
 """Read nframes frames of the file. :Parameters: nframes : int number of frames to read. dtype : numpy dtype dtype of the returned array containing read data (see note). Notes ----- - read_frames updates the read pointer. - One column is one channel (one row per channel after 0.9) - if float are requested when the file contains integer data, you will get normalized data (that is the max possible integer will be 1.0, and the minimal possible value -1.0). - if integers are requested when the file contains floating point data, it may give wrong results because there is an ambiguity: if the floating data are normalized, you can get a file with only 0 ! Getting integer data from files encoded in normalized floating point is not supported (yet: sndfile supports it)."""

        return self._sndfile.read_frames(nframes, dtype)