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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 _prepare_coords(lons1, lats1, lons2, lats2):
 """ Convert two pairs of spherical coordinates in decimal degrees to numpy arrays of radians. Makes sure that respective coordinates in pairs have the same shape. """

    lons1 = numpy.radians(lons1)
    lats1 = numpy.radians(lats1)
    assert lons1.shape == lats1.shape
    lons2 = numpy.radians(lons2)
    lats2 = numpy.radians(lats2)
    assert lons2.shape == lats2.shape
    return lons1, lats1, lons2, lats2