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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 _numpy_char_to_bytes(arr):
 """Like netCDF4.chartostring, but faster and more flexible. """

    # based on: http://stackoverflow.com/a/10984878/809705
    arr = np.array(arr, copy=False, order='C')
    dtype = 'S' + str(arr.shape[-1])
    return arr.view(dtype).reshape(arr.shape[:-1])