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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 coord_pyramids(coords, zoom_start, zoom_stop):
 """ generate full pyramid for coords Generate the full pyramid for the list of coords. Note that zoom_stop is exclusive. """

    for coord in coords:
        for child in coord_pyramid(coord, zoom_start, zoom_stop):
            yield child